1. Let difficulties occur but not the loss of courage. 

2. Miracles sometimes occur, but one has to work terribly for them. 

3. When did the accident occur?

4. A third of accidental deaths occur in the home.

5. I hope this won't occur again.

6. When exactly did the incident occur?

7. Rainforests occur around the equator.

8. I don't want such a thing to occur again.

9. Many bodily changes occur during adolescence.

10. Mental and physical deterioration both occur naturally with age.

11. These chemical changes occur quite naturally.

12. The thought did occur to me.

13. Adaptations in plants occur over thousands of years.

14. Miracles sometimes occur(), but one has to work terribly hard for them.

15. Cases of child cruelty occur more often than they are observed.

16. The highest spring tides of the year occur after the equinoxes in March and September.

17. If headaches only occur at night,[ ] lack of fresh air and oxygen is often the cause.

18. Changes in temperature occur slowly and are constrained within relatively tight bounds.

19. About two in every five epileptic fits occur during sleep.

20. Such plants don't occur here.

21. An explosion will probably occur at any minute.

22. These problems occur in all families.

23. No one has suggested how this might occur.

24. It is uncertain how likely this is to occur.

25. Human felicity is produced not so much by great pieces of good fortune that seldom happen, as by little advantages that occur every day. 

26. Emergency cooling systems could fail and a reactor meltdown could occur.

27. If the primary infection is not treated further outbreaks may occur.

28. It is better to lead from behind and to put others in front, especially when you celebrate victory when nice things occur. You take the front line when there is danger. Then people will appreciate your leadership.

29. The strength of altruism lies in the fact that altruistic acts undeniably occur in any society and that moral codes universally advocate altruism or benevolence and condemn selfishness.

30. She's written a program to find words which frequently occur together.

1. When did the accident occur?

2. A third of accidental deaths occur in the home.

3. When exactly did the incident occur?

4. Rainforests occur around the equator.

5. Many bodily changes occur during adolescence.

6. Mental and physical deterioration both occur naturally with age.

7. These chemical changes occur quite naturally.

8. The thought did occur to me.

9. Adaptations in plants occur over thousands of years.

10. Emergency cooling systems could fail and a reactor meltdown could occur.

11. Cases of child cruelty occur more often than they are observed.

12. If the primary infection is not treated further outbreaks may occur.

13. If headaches only occur at night, lack of fresh air and oxygen is often the cause.

14. Changes in temperature occur slowly and are constrained within relatively tight bounds.

15. About two in every five epileptic fits occur during sleep.

16. She's written a program to find words which frequently occur together.

17. Opportunities for learning occur spontaneously every day.

18. in the fact that altruistic acts undeniably occur in any society and that moral codes universally advocate altruism or benevolence and condemn selfishness.

19. Did the matter in question occur on or about ten o'clock on the fifteenth of June?

20.

31. Similar species of fish occur in Mongolia.

32. Minerals occur naturally in the earth's crust.

33. Most infections occur in childhood.

34. Most avalanche accidents occur on north- and east-facing slopes.

35. The fits usually occur at night.

36. Many suicides occur in prisons.

37. The word "gratitude" did not occur in his words.

38. Accidents regularly occur on this bend.

39. Opportunities for learning occur spontaneously every day.

40. Fish doesn't occur in the river.

41. References to pain occur throughout the poem.

42. Irregularities occur when there is no central control.

43. Technical innovation may occur directly in the factory.

44. Misprints occur on every page.

45. Of course, minor mechanical faults sometimes occur.

46. Mistakes could and, in all probability, would occur.

47. Didn't it occur to you to close the window?

48. The disturbances seem to occur in waves.

49. It didn't occur to her to ask for help.

50. Did it ever occur to you that...?

51. They expect bonding to occur naturally.

52. More deaths occur in winter.

53. Cell divisions during development occur in a fixed sequence.

54. In humans, fertilization is more likely to occur at certain times of the month.

55. It didn't occur to him that his wife was having an affair.

56. Problems only occur when this attitude is taken to extremes.

57. According to the report, most accidents occur when young children are left unattended in the home.

58. Over 90% of all new infections occur in the developing world.

59. Such events occur only when the external conditions are favorable.

60. It never seems to occur to my children to contact me.

61. Does it never occur to you that I might like to be on my own occasionally?

62. If a problem does occur, a signal is automatically sent to the mainframe.

63. If the climate gets drier, then the logical conclusion is that even more drought will occur.

64. Revolution can only occur at a time when both internal and external conditions of a country are ripe enough.

65. Nitrates are chemicals that occur naturally in water and the soil.

66. The games occur triennially.

67. Rattlesnakes occur in the warmer, drier parts of North America.

68. I suppose it didn't occur to you to phone the police?

69. If any of these symptoms occur while you are taking the medicine, consult your doctor immediately.

70. It is unthinkable that we shall allow a nuclear holocaust to occur.

71. It did not occur to me to check my insurance policy.

72. in the fact that altruistic acts undeniably occur in any society and that moral codes universally advocate altruism or benevolence and condemn selfishness.

73. By noticing these changes, the woman can tell when ovulation is about to occur.

74. High levels of nitrate occur in eastern England because of the heavy use of fertilizers.

75. There will come a time when the crisis will occur.

76. Ulcers occur when the stomach's natural acids eat into the lining of the stomach.

77. Forty degrees centigrade is the maximal temperature at which this chemical reaction will occur.

78. When vacancies occur,[http:///occur.html] the office puts out feelers to the universities.

79. Flight delays do occur, for reasons that are outside our control .

80. Some movement in the building will occur as it settles into the subsoil.

81. These snails do not occur on low-lying coral islands or atolls.

82. Sixty per cent of all marital separations occur before the tenth year of marriage.

83. Keep a pad handy to jot down queries as they occur.

84. If the drought continues, deaths will occur on a massive scale.

85. Three vacations occur in the course of the year,viz,two weeks at Christmas,ten days at Easter and the usual two months in summer.

86. Manifestation of the disease often doesn't occur until middle age.

87. Did the matter in question occur on or about ten o'clock on the fifteenth of June?

88. The highest rates of unemployment occur in the inner urban areas.

89. Violence of some sort seems to occur in every society.

90. Private collective action is possible and does occur.

91. The possibilities where this may occur are outlined below.

92. The marriage ceremonies would occur the following day.

93. Except by change, learning can not occur amid chaos.

94. Thus chemical reactions occur in the vapor phase.

95. During adulthood significant changes in sleep occur.

96. Classroom activities here would prepare the learners to recognize the relevant co-occurrences and correlations as they occur in actual use.

97. These forests vary in character from closed forests to open woodlands and include mangrove forests that occur in coastal regions.

98. Shallow Pools and Crevices Considerable variation in shore fauna can occur even in the same stretch of coast.

99. Unlike child care considerations, which often can be planned months in advance, eldercare issues often occur without warning.

100. That change should occur within about three years for large carriers, while small companies will be free of rate regulation immediately.

101. Both increased bone resorption and increased intestinal absorption of calcium occur.

102. I've been collecting samples of the different types of rock which occur in this area.

103. The jury's note should have alerted the judge to problems that might occur.

104. There are two other points in this extract, sentences 4 and 10, where adverbial clauses occur in sentence-initial position.

105. Long delays in obtaining passports and visas often occur; be sure to apply well in advance of the anticipated departure date.

106. It is at this point that things often go wrong and communication breakdowns occur.

107. This can occur at any time but particularly when the student has been observed or supervised in her nursing care.

108. Thus,[http:///occur.html] it seems most reasonable to PostPone drug therapy of primary hyperuricemia until clinical manifestations occur.

109. If we could list those we'd have advance warning of shortage problems on the assembly lines two months before they occur.

110. These breakages can occur anywhere in the plants, and the fragments can be large or small.

111. Undesirable removal of lubricants may occur in machinery and hazards may arise in the use of steam lances.

112. Many feel political participation must be made worthwhile before active citizenship can occur.

113. This is closely linked to their passivity: it does not occur to them that they could make changes in their world.

114. Seems to me the basic conflict between men and women, sexually, is that men are like firemen. To men, sex is an emergency, and no matter what we're doing we can be ready in two minutes. Women, on the other hand, are like fire. They're very exciting, but the conditions have to be exactly right for it to occur. Jerry Seinfeld 

115. Although many of these transactions and services already occur electronically, they require dedicated lines or prior arrangements.

116. Significant excretion of solute-free water can not occur unless significant amounts of solute and water reach this point.

117. They evolved in the bloodstreams of people in hot countries as a defence against malaria and occur mainly in black people.

118. It becomes critical that the algorithm or program approximates sufficiently, or disaster can occur Smart materials make the situation even worse.

119. Looting and rape by rebels and their bands of abducted children still occur.

120. It plans to write to the Crown Office to seek an assurance that a similar incident would not occur.

121. Hence, carry-over or cross-contamination can occur in continuous flow analyzers if suitable precautions are not taken.

122. An attempt to pass a Republican budget that includes major changes in Medicare may occur again next month.

123. Whether a particular chemical reaction is likely to occur is related to the change in free energy involved.

124. Several reports from the older literature indicate that tetany may occur in association with hypokalemia, but the mechanism is poorly understood.

125. No such authoritative review of clinical ecology can occur without the active participation of proponents of the approach.

126. A stock exchange spokeswoman declined to reveal the buyer pending final payment, which should occur within 10 days.

127. Verbal aggression is more likely to occur than physical aggression in groups whose members come from middle- or upper-income families.

128. Thus many of the issues that arise over open case conferences with client access also occur in network meetings.

129. Strokes can even occur in unborn babies and small children.

130. In well ventilated theatres it is unlikely that any colour change will occur unless accidental spillage should take place.

131. Temper tantrums often disappear when they no longer receive attention, aggressive behavior is attenuated by making may occur without being punished.

132. Alterations to your flight details sometimes occur for operational reasons and we reserve the right to make these if the need arises.

133. Explosions that occur at high enough altitudes will lay down severe shock and fire damage without the fireball ever contacting the ground.

134. In addition, night-time awakenings become two times more likely to occur.

135. However, when a subordinate clause follows a main clause this additional processing load does not occur.

136. This is further complicated by the above-mentioned color changes that occur with growth.

136. try its best to gather and make good sentences.

137. Before the decommissioning and construction of a maintenance facility can occur, however, the Navy must complete an environmental assessment report.

138. Events of the past week have shown it is not likely to be among the major companies that total collapses will occur.

139. If this were not so, contextual facilitation of auditory word recognition would occur only for words at the end of clauses.

140. It is not necessary for changes to occur in each of the three areas to consider a significant response as having occurred.

141. The cryptocorynes occur mainly in cultures of single species on overgrown river beds and are exposed to the conditions of amphibious life.

142. Most of the conflicts concerning agriculture and amenity also occur in a particularly acute form on the urban fringe.

143. These species do not grow in association with Lagenandra and Hygrophila because they do not occur in river beds.

144. Small bowel obstruction continues to occur after this operation despite increasing experience with the procedure.

145. To qualify for the higher limit, disablement must occur before reaching pensionable age.

146. These allow soil attachment to occur normally but to the coating rather than the substrate.

147. Since they are not identical, this unexpected result suggests that citations by others occur before the majority of self-citations.

148. Early quantum mechanics required that interactions between sub-nuclear particles and atoms occur in spaces which are free of energy and mass.

149. The situation is modified when records are stored in buckets holding several records, but synonyms still occur.

150. Personal evaluations occur bi-annually and are used to assess both changes in the basic wage and individual bonus payments.

151. Cervical papillae occur anteriorly in the oesophageal region, and caudal papillae posteriorly at the tail.

152. None the less, we must also acknowledge that most often reconciliation does not occur.

153. Spectacular medical breakthroughs sometimes occur, but they occur more commonly in science fiction than in the course of everyday scientific research.

154. It is interesting that certain numbers seem to occur frequently in folklore, particularly three, seven and nine.

155. Likewise no appreciable changes in waist-hip ratio occur with small fluctuations in weight.

156. With zeros you can predict very accurately what your capital gains will be and when they will occur.

157. It is, rather, the context in which more adequate explanation can occur, or at least be attempted.

158. Incidentally, cavity wall insulation should be impermeable to water vapour, or interstitial condensation can occur.

159. An extension of this may occur when the victim actually, becomes a supporter or advocate of her captor.

160. In general, such luxury items occur only rarely in Lincoln and the owners may well have been relatively wealthy burghers.

161. Government works best under the glare of public scrutiny. Absent such scrutiny, abuses occur. Stephen Hawking 

162. Frustration can easily occur unless members radically change their thinking to view the church-as-a-force.

163. Problems in relationships occur because each person is concentrating on what is missing in the other person. Wayne Dyer 

164. On passage, and sometimes in winter, Water Rails may occur in built-up areas.

165. What tragedies must occur before he and the Minister of State will change their minds?

166. The more we anticipate the fear reaction the more likely it is that it will occur.

166. try its best to gather and build good sentences.

167. Whether the continued global warming and associated changes in atmospheric circulation will occur steadily is unknown.

168. In lambs, patent infections first occur in early summer, but the heaviest infections are usually seen in autumn.

169. In modern, centrally heated homes, chilblains occur less and less.

170. Whitby jet was widely used in Roman Britain, and jet beads occur commonly in Anglian cemeteries of the Anglo-Saxon period.

171. Does it only occur at work or social events or do certain people trigger it?

172. Although anorthosite and basalt are the dominant rocks on the Moon, significant amounts of several other related rock types occur.

173. No gas fields occur in the Bramsche and Vlotho Massifs, although in the past many boreholes have been drilled there.

174. Life always waits for some crisis to occur before revealing itself at its most brilliant. Paulo Coelho 

175. One would expect this to occur most readily when the anode and cathode spacing was small.

176. Sudden electrical death may occur early after blocking a coronary artery.

177. Nevertheless, they do occur and occasional assaults and other criminal acts are committed.

178. This could easily occur if the spur was taken through a wall to feed a socket in an adjacent room.

179. Fisher also argues that, even if you know for sure that a bear market will occur, selling is dumb.

180. In species that forage inshore, clutches are usually larger but brood reduction may occur under adverse circumstances.

181. Two events occurred that ensured, for the time being at least, no such a change in Congressional attitudes would occur.

182. Most burglaries occur when a house or apartment is empty.

183. Strokes occur when blood vessels become clogged, blocking the flow of oxygen to an organ such as the brain.

184. There is a lot of evidence that such internal restrictions occur in all the accounts of descent groups amassed by anthropologists.

185. The principles of learning theory provide a prima-facie explanation of the linguistic changes which occur during childhood.

186. If pump failure should occur during your absence, the fishes could live for a considerable length of time.

187. Clay minerals occur in a bewildering variety of forms; only the major groups are listed in Table 6.3.

188. High military expenditure will fuel inflation, reduce international competitiveness, and balance of payments crises will occur as public debt increases.

189. According to a report commissioned by Greenpeace, a serious accident could occur.

190. Criminal libel is unlikely to occur other than rarely, but is available to define the limits of acceptable behaviour.

191. Politics does not occur only in voting booths or demonstrations.

192. Areas where this need can arise usually occur when a surgical procedure or accident has resulted in loss of bone.

193. Perhaps the most astonishing changes of all occur for the average changes for Shire Districts within each County.

194. The systems planning team ought to anticipate problems that may occur.

195. The doctor advises that insomnia with resultant irritability and even mild depression may occur.

196. Pre-emptive analgesia has, indeed, been said to have been shown to occur in several clinical studies.

196. is a sentence dictionary, on which you can find nice sentences for a large number of words.

197. Many more accidents and accidental deaths occur off the job than at work.

198. Greater agricultural mechanisation has led to considerable modification of this landscape and larger arable fields now occur in the area.

199. He thinks that the ancient sites were locations where altered states of consciousness could more readily occur.

200. So we must look around for phenomena that occur every 150 million years or so.

201. About two-thirds of all collisions at state public crossings actually occur where everything is functioning properly.

202. It did not occur to her to ask the police for assistance.

203. The purpose of this is to help clients deal appropriately with relapses, which do occur.

204. This is in agreement with other workers who have shown that fade does not occur with histamine.

205. Great earthquakes occur adjacent to the inclined contact between the two plates.

206. Some of the clearest indications of Anderson's vagueness occur at the level of topic-control.

207. In the absence of careful planning, it will not occur.

208. Those that were able to acclimatize might have survived long enough for hereditary processes to be invoked and adaptation to occur.

209. Liver damage is known to occur when the breakdown product of a chemical is highly toxic.

210. The machine controls caused power to be applied and consequences to occur which resulted in changed readings on the instruments.

211. From there, indicate that you want to clarify a few points so this type of problem does not occur again.

212. Threats to the rear occur throughout life, although with less frequency and intensity than during childhood.

213. It can protect your equipment from hazardous brownouts that occur when electric companies reduce voltage during periods of peak demand.

214. But if marriage patterns were to be drastically altered, significant changes in the social structure would occur.

215. Financial support in the future should be designed to support farmers when calamities occur, and not to control their lives.

216. Alf Dean, Rekord's general manager, says two problems regularly occur with the choppers.

217. Manufacturing companies must analyse the profits arising for their shareholders and report these as they occur.

218. After all, the coincidence could not be expected to occur so neatly every 150 million years.

219. Seizures occasionally occur in patients taking theophylline for control of bronchial asthma.

220. Creating the climate in which such tough talking can occur is a highly skilled task and takes careful preparation.

221. Economic trends occur swiftly and become established before large industries can scale up and take advantage of new demands.

222. Fertilisations may occur over a period of a month, but the most recent foetuses have the best chance to develop.

223. A trial is set for next April but a settlement will probably occur before then.

224. The same can occur in the hot, dry winds of summer, especially on the beach where sea breezes are active.

225. Although the bacteria can multiply in soft cheeses, they also can occur in hard cheese without posing such a danger.

226. Just when did this revolution occur and in fact did information exist before its arrival in electronic form?

226. is a online sentence dictionary, on which you can find nice sentences for a large number of words.

227. Fractals, using simple mathematical algorithm to produce complex objects typical of those which occur naturally.

228. Physiological addiction may occur after repeated use of analgesics for relief from chronic pain.

229. Occasionally, waterlogged conditions can occur inside burial mounds-a temperate-climate version of the Siberian phenomenon.

230. I he only two pieces of experimentation that one can attribute to the Presocratics occur in the Pythagoreans and in Anaxagoras.

231. It could be argued that this is far more likely to occur to a self-regulatory body than to a statutory body.

232. He devised an experiment to ascertain whether salivation could occur in the absence of any obvious physical cause.

233. The little green cushions and incrustations occur not only in association with trees and rocks.

234. Peat bogs, nearly all of which occur in northern latitudes. are some of the most important environments for wetland archaeology.

235. Ostinatos Ostinatos occur as a brief recurring motif or as a repeating bass in the form of a chaconne or ground.

236. Community participation in conservation can occur under a variety of different circumstances, but one can identify some that make it easier.

237. He must bear primary responsibility for the chaos that descended upon the White House when such disclosure did occur.

238. Good. Discolouration may occur in sunlight exposure.

239. Tighten packing nut lightly if leaks occur around stem.

240. Instead of waiting for an outage to occur, consumers should do security testing on their own to check how well a SaaS service provider can recover data.

241. Problems that can occur a few months to years later are hernias at the cannula sites or overwhelming infection throughout the entire body.

242. Allan Snyder and John Mitchell of the Centre for the Mind in Canberra , Australia, argue that savant brain processes occur in each of us but are overwhelmed by more sophisticated conceptual cognition.

243. Within the consumer behavior literature alone, literally thousands of lifestyle research citations occur.

244. The third parameter needed for an oil field to occur is the cap rock or seal.

245. WHO estimates that 340 million new cases of sexually transmitted bacterial infections, such as chlamydia and gonorrhoea occur annually in people aged 15 - 49.

246. In an area where freezing conditions can occur , Series 909 should be installed above ground in an insulated enclosure.

247. Anaerobic processes could either occur naturally or in a controlled environment such as a biogas plant.

248. It is unclear if cases of yaws still occur in the Americas.

249. The reactions of the protein N-glycosylation pathway occur along the secretory pathway and most of the entail enzymes localized in the endoplasmic reticulum and the Golgi body.

250. He names the larger map New Board Game Development Process and creates a process map with a set of activities that occur in sequence.

251. Induced polarization method uses the two modes of electrical conduction that occur in mineralized rocks, ionic in pore fluids and electronic in metallic minerals.

252. Disease surveillance is not adequate to detect cases of sylvatic yellow fever that often occur in remote areas.

253. Lung paralysis can occur up to ten days after a bite by an elapid (member of the cobra family). Death usually comes about by means of respiratory failure.

254. The boundary condition was studied in the case that the source rock or coal seams occur above or under the simulated coal series.

255. In some people,[] hay fever - like symptoms occur all year round.

256. The results show that when size effects occur, the interactions between projectiles and targets don t accord with geometrical similarity law.