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You must/mustn't listen to your teacher
must
You must/mustn't be quiet
must
You must/mustn't eat or drink in the museum
mustn't
You must/mustn't eat or drink in the museum
mustn't
You must/mustn't have a shower before entering the swimming pool
must
You must/ mustn't talk to your classmates
mustn't
You must/ mustn't throw rubbish in the rubbish bin
must
You must/mustn't throw rubbish on the floor
mustn't
You must/mustn't sleep in the classroom
mustn't
You must/mustn't do your homework
must
