Grammar Quiz: Must / Have to / Don’t Have to / Must Not

This must and have to grammar quiz helps English learners practice modal verbs used for obligation, necessity, and prohibition. Understanding when to use must, have to, don’t have to, and must not is essential for building accurate, confident sentences in everyday conversation and writing.

Before you start, review the quick reference below, which contrasts necessity (must / have to), the absence of necessity (don’t have to), and prohibition (must not), then test your knowledge with the interactive multiple-choice quiz. For more practice, explore our English grammar quizzes collection, and consult the Cambridge Dictionary grammar guide for additional examples.

Must and Have to Grammar Quiz: Quick Reference

Read each sentence and choose the best option—must, have to / has to (necessary), don’t/doesn’t have to (not necessary), or must not (not allowed/ prohibited). Tap an answer to select it, then press Submit Quiz to see your score. Correct answers will be highlighted in green, and your chosen wrong answers will show in red so you can learn from mistakes. You can review your results and try again to improve your score. This quiz works perfectly on both mobile and laptop.

Grammar Quiz — Must / Have to / Don’t Have to / Must Not

🟢 Use must / have to / has to for something necessary or important.  |  🔵 Use don’t have to / doesn’t have to for something not necessary.  |  🔴 Use must not for something not allowed/ prohibited.

Multiple Choice Quiz

Choose the correct answer for each question.

1. Drivers _______ stop at red lights.

don’t have to must must not

2. My sister _______ wear an abaya when she goes out.

has to must have to

3. He _______ clean his car every day; it’s already clean.

doesn’t have to must have to

4. You _______ be quiet in the library.

must don’t have to has

5. My mother _______ cook tonight; we are eating out.

doesn’t have to must have to

6. A doctor _______ listen carefully to every patient.

has to have to must not

7. You _______ wear shoes inside the mosque.

must not must doesn’t have to

8. We _______ buy water; the school provides bottles for everyone.

doesn’t have to don’t have to must

9. My brother _______ help our father with the shop in the evening.

have to has to don’t have to

10. You _______ pray five times a day.

must don’t have to must not

11. She _______ cook dinner today; her mom already cooked.

don’t have to doesn’t have to doesn’t have to

12. You _______ use your phone while driving. It’s dangerous.

have to must not don’t have to

13. We _______ leave early because the mall closes at midnight.

has to don’t have to have to

14. Students _______ respect their teachers in class.

must don’t have to must not

15. He _______ arrive early; his manager is very strict about timing.

doesn’t have to has to have to

16. They _______ wear uniforms at work because it’s casual day.

don’t have to doesn’t have to has to

17. Pilgrims _______ follow the rules during Hajj.

must must not have

18. The bus driver _______ work on Fridays because it’s his day off.

doesn’t have to must don’t have to

19. Children _______ sit in the back seat of the car for safety.

must don’t have to must not

20. My teacher _______ come to school on Saturday. It’s a holiday.

has to must doesn’t have to

21. You _______ bring your own food. We’ll eat together after class.

don’t have to doesn’t have to has to

22. Visitors to Makkah _______ show respect and dress modestly.

must musts has

23. A taxi driver _______ drive at night if he doesn’t want to.

must don’t have to doesn’t have to

24. You _______ stop when the traffic officer raises his hand.

must must not have

25. He _______ buy a new phone; his old one still works fine.

don’t have to doesn’t have to must

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Quiz Results