1. Is their music teacher in the teachers' office?
2. Are you going to buy a car?
3. Was it hot the day before yesterday?
4.Were they happy yesterday?
5. Can you jump high?
6. May I open the window?
7. Does she like watching TV?
8. Do they often go to the Bund?
9. Did you visit your grandma last week?
10. Will they attend the meeting the day after tomorrow?
11. Shall I take a walk with you after supper?
12. What time is it by your watch?
13. How old is your little brother?
14. What is your favourite subject?
15. Where are you going?