1) You ... cheat at exams or tests. a) must b) mustn't 2) You ... come in time at school. a) must b) mustn't 3) You ... use your mobile phone. a) must b) mustn't 4) You ... work at the lessons. a) must b) mustn't 5) You ... swim here. a) must b) mustn't 6) You ... sleep in the classroom. a) must b) mustn't 7) You ... run at school. a) must b) mustn't 8) You ... do your homework in time. a) must b) mustn't 9) You ... eat or drink in the classroom. a) must b) mustn't 10) You ... run with a broken leg. a) must b) mustn't 11) You ... eat more fruit and vegetables. a) must b) mustn't 12) You ... take your umbrella. a) must b) mustn't 13) You ... go to the dentist with a toothache. a) must b) mustn't 14) You ... stop when you see this sign. a) must b) mustn't

Must Mustn't

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