May - should - can - must - mustn't - could - don't have to
1) He _____ run as fast as he want.

2) I _____ play tennis when I was younger.

3) You_____ put your rubbish in the bin. It's a rule.

4) You _____ take my suitcase if you need to travel abroad.

5) You _____ make dinner. I did it yesterday.

6) - I'm too tired.

- You _____ have a rest.

7) I'm sorry, but you _____ eat in class.