1、May I talk with you ?
2、All of them can answer my questions.
3、Need I go to your office tomorrow ?
4、It means we shouldn't eat or drink in the cinema.
5、Can you make kites? No, I can't.
6、Wang Bing is ill. He may not go to school tomorrow.
7、Excuse me, can I have some envelopes?
8、You mustn't walk on the grass.
9、You worked for a day. You must be tired.
10、You must finish your homework before lunch.
11、You may ask Tom how to make a model ship.
12、You've got a cold. You must stay in bed and have a good rest.
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