1. You ______ better see a doctor about that cough.

2. Every student ______ to follow the school rules.

3. We ______ not to play football in the street.

4. Last year, she ______ to move to a new city.

5. You ______ to study harder if you want to pass.

6. ______ they have to go to school on Saturdays?

7. I ______ better not be late for the meeting.

8. The staff ______ working very hard right now.

9. You ______ to be quiet in the library.

10. Yesterday morning, I ______ to go to the dentist.

11. She ______ better finish her tea before it gets cold.

12. Children ______ not to watch too much TV.

13. At this time tomorrow, we ______ on the beach.

14. He ______ to buy a new laptop next month.

15. You ______ to wear a helmet when riding a bike.

16. ______ she have to finish the report yesterday?

17. I ______ better go now, or I'll be late.

18. They ______ a lot of toys, don't they?

19. You ______ not to drive so fast.

20. While they ______ football, it started to rain.

21. My mother ______ to work at 8 a.m. every day.

22. We ______ better not park the car here.

23. ______ he have to wear glasses to read?

24. People ______ not to litter in the park.

25. Listen! The teacher ______ the lesson.