Grammar Exercise: "Must" and "Have To" Differences

Pre-Intermediate

For each space, choose which is better - 'must' or 'have to'.

1. Professor Watkins told me today that I give in that assignment by Friday at the latest.

2. John! This is a one way street. You turn back and use Smith Street.

3. My back has been hurting for weeks. I go to the doctor's.

4. My company said that if I want this promotion, I go to the doctor's for a thorough medical check-up first.

5. I went to see "Alien 9" at the cinema last night. What a great film! You go and see it!

6. Jane. Thanks for everything. It was a great party. I go now. I am really tired.

7. Jane. Thanks for everything. It was a great party. I go now. My husband is waiting for me outside.

8. I am taking out a bank loan this month. I pay a lot of taxes all together.

9. Hey, you boys!! You are not supposed to be in this room. You leave now!!

10. The local council is really strict about protecting that piece of lawn! You walk around it!