(1) They puzzled over the question for quite a while.

(2) For many years, experts in occupational health have puzzled over symptoms reported by office workers, including headache, nausea and fatigue.

(3) She's been puzzling over his strange letter for weeks.

(4) She puzzled over the postmark on the letter.

(5) She was puzzled over the decision.

(6) The old general was puzzling over the old map.

(7) Karen puzzled over the question all evening.

(8) The class puzzled over a poem by Shakespeare.

(9) She was puzzled over his strange behavior.

(10) In rehearsing Shakespeare, I puzzle over the complexities of his verse and prose.

(11) I've been puzzling over all the figures, trying to find what happened to the missing money.

(12) He puzzled over her remark for a moment, and then at last the penny dropped.

(13) I puzzled over it for hours before it finally clicked.

(14) I puzzled over the problem for ages before the light suddenly dawned.

(15) I puzzled over this question for a long time before it finally clicked.

(16) Scientists are puzzling over the results of the research on the drug.

(17) I was puzzling over the wording of the second paragraph when the phone rang.

(18) He leaves them to puzzle over this problem while he moves on to another group.

(19) Puzzling over this, I nearly miss a water rail which scuttles off down a drainage ditch towards the loch of Westsandwick.

(20) Detectives puzzling over a motive say the girls were not sexually assaulted.

(21) Others, too, puzzle over what to call the person who used to be a manager.

(22) Her mind was taken up with puzzling over a fact which had become increasingly clear the longer she stayed in the apartment.

(23) I saw him puzzle over an arithmetic problem.

(24) Tao Zi, I puzzle over the meaning of life.

(25) Then , of course, there is the puzzle over why the US invaded Iraq.

(26) Cang Li Man, I puzzle over what you look like today.

(27) She lets him puzzle over that for a moment, then claps her hands.

(28) You needn't puzzle over every single word or phrase in the book.

(29) It was only when the young man moved away in this fashion that George began to puzzle over the incident.

(30) Patience is a virtue – admit early on in the strategic intelligence process that you are never going to have enough data and work to piece together parts of the puzzle over time.

(31) Historians puzzle over why, for 500 years after inventing gunpowder, China invented so little else.

(32) You know I can read very well, and I am never so well pleased as when I can get some of the troubadour songs, or some old chronicle, to puzzle over.