1) When we were at school we _______ wear a uniform. a) had to b) should c) must 2) You ______ be an expert to use the basic functions of program. a) don't have to b) shouldn't c) mustn't 3) We _______ go to the meeting. Why didn't you go? a) should b) had to c) must 4) I ________ wear glasses, I still can see perfectly well. a) mustn't b) shouldn't c) don't have to 5) We went to bed right after dinner because we _______ get up early the following day. a) must b) should c) had to 6) What are you doing? You ______ be here! a) mustn't b) don't have to c) should

must, mustn't, have to, don't have to, should, shouldn't

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