1. The children sat up late watching TV yesterday evening.

2. We sat up late watching a film on TV.

3. We don't allow the children to sit up late.

4. If you are going to sit up late,you can include me out!

5. Her parents sat up late to hear him, though when her New York friends visited they went early to bed.

6. Although they sat up later than their normal bedtime, neither could find any explanation.

7. Why do you often sit up late?

8. He used to sit up late studying.

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

9. We sometimes sit up late.

10. Make it a rule not to sit up late.

11. It is usual for him to sit up late at night.