1) We ________talk about this problem now. It’s very important! a) must b) musn't c) don't have to 2) In my opinion, you _______________ buy this jacket. It doesn’t look very nice. a) should b) shouldn't c) must 3) You _______________ travel on a bus without a ticket. It’s illegal. a) musn't b) must c) should 4) She feels better now, so she _______________ stay in bed anymore. a) don't have to b) doesn't have to c) shouldn't 5) _______________ switch off your mobile phone at school? What are the rules? a) Must you b) Do you have to c) Mustn't you 6) Students _______________ use their mobile phones in class. It’s against the rules. a) musn't b) must c) don't have to 7) She’s very ill, so she _______________ have an operation soon. a) has to b) have to c) doesn't have to 8) I think we _______________ wait a few minutes for Mark. He’ll be here I’m sure. a) shouldn't b) mustn't c) should

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