May / may not / should / shouldn't / must / mustn't. 1. You must / should / shouldn't be 18 before you can drive.
2. You don't have to / mustn't / shouldn't go to bed so late. It's not good for you.
3. You don't have to / may not / shouldn't wear a school uniform in most Spanish state schools.
4. Before you buy this black dress, you mustn't / should / shouldn't try it on.
5. She has broken her arm in three places. It may not / must / shouldn't be painful.
6. We shouldn't / may / must go out to a disco club tonight. Do you want to join us?
7. Slow down! You must / need / shouldn't drive so fast. It is not safe.
8. Must/ should / may I borrow your dictionary? Yes, of course.
9. It's getting dark. I think I shouldn't / should / may not go home now. My parents will be upset if I am
late.
10. I should / shouldn't / mustn't have taken an umbrella. It is raining,
11. Your son needs / shouldn't / may eat so many sweets. It's not good for him.
12. Actors may / should / must learn a lot of dialogues by heart.
13. You must / should / may do more sport if you want to lose weight.
14. We shouldn't / may not / must stop when the traffic light is red.
15. You may / must / mustn't do your homework first if you want me to let you go out with your friends.
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