- On a plane, you _____________ smoke in the toilets.
- We ________________ hurry, we are early.
- What's that animal? I'm not sure, it ______________ be a rabbit.
- A: Little Mary is ten months now B: _______________ she walk?
- You ___________ leave the door open, the rain will come in.
- You ___________drive so fast, we have got a lot of time.
- In class, you ______________ask for permission to go to the toilet.
- They _____________ be away for the weekend but I'm not sure.
- It's OK. You ____________________ pay now. You can pay me at the end of the month.
- We_________________ go to the party. We are going to a wedding.
- You ______________eat in the classroom.
- You __________________- finish the exercise now. You can finish it at home.
ANSWERS
- mustn't
- don't have to
- may/might/could
- Can
- mustn't/shouldn't
- don't have to
- must
- may/might/could
- don't have to
- can't
- mustn't
- don't have to
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