1. You ______ park in front of the fire hydrant. mustn't
a) mustn't
b) don't have to

2. You ______ come early; just be on time. don't have to
a) mustn't
b) don't have to

3. Students ______ use their phones during the test. mustn't
a) mustn't
b) don't have to

4. You ______ stay if you're feeling unwell. don't have to
a) mustn't
b) don't have to

5. He ______ interrupt when others are speaking. mustn't
a) mustn't
b) doesn't have to

6. They ______ attend the meeting if they’re on vacation. don't have to
a) mustn't
b) don't have to

7. Children ______ play with sharp objects. mustn't
a) mustn't
b) don't have to

8. She ______ study every single night, just enough to keep up. doesn't have to
a) mustn't
b) doesn't have to

9. You ______ waste water during the drought. mustn't
a) mustn't
b) don't have to

10. We ______ wear formal clothes for the casual Friday event. don't have to
a) mustn't
b) don't have to

11. She ______ bring a gift, but it would be nice if she did. doesn't have to
a) mustn't
b) doesn't have to

12. You ______ come to the meeting if you're busy. don't have to
a) mustn't
b) don't have to

13. They ______ touch the artwork in the museum. mustn't
a) mustn't
b) don't have to

14. We ______ finish all the food if we're full. don't have to
a) mustn't
b) don't have to

15. You ______ leave your bag unattended in the airport. mustn't
a) mustn't
b) don't have to

16. She ______ answer the question if she doesn’t know the answer. doesn't have to
a) mustn't
b) doesn't have to

17. You ______ cross the street when the light is red. mustn't
a) mustn't
b) don't have to

18. They ______ agree with the decision, but they need to respect it. don't have to
a) mustn't
b) don't have to

19. You ______ cook tonight; we can order takeout. don't have to
a) mustn't
b) don't have to

20. He ______ bring the documents unless they’re needed today. doesn't have to
a) mustn't
b) doesn't have to