1. You _______ wear a helmet when riding a motorbike.

2. I _______ get up early tomorrow for my flight.

3. You _______ park your car here. It's a "No Parking" zone.

4. It's Sunday today, so I _______ go to school.

5. Did you _______ work late yesterday?

6. Children _______ obey their parents.

7. You _______ touch that wire. It's very dangerous!

8. My eyesight is bad; I _______ wear glasses to read.

9. In the past, people _______ travel by horse.

10. You _______ forget to turn off the lights before leaving.

11. Students _______ use mobile phones during the exam.

12. Does she _______ wear a uniform at her work?

13. You _______ be 18 to drive a car in this country.

14. We _______ buy more eggs. We already have two boxes.

15. I _______ finish this report by 5 PM today.

16. You _______ shout in the library.

17. We _______ pay for the tickets in advance.

18. You _______ bring a coat. It’s very warm outside.

19. Visitors _______ feed the animals in the zoo.

20. She _______ work on Saturdays, but she usually does.

21. You _______ have a passport to travel abroad.

22. We _______ wait long for the bus yesterday.

23. You _______ tell anyone my secret. Promise?

24. Do we _______ pay for the water in this restaurant?

25. You _______ take photos here. It is strictly forbidden.