True: We mustn't talk, We must listen to teachers, He mustn't eat, We must be quiet, They must be nice, You mustn't use your phone, We must do homework, You mustn't be late for school, False: We must talk, We mustn't listen to teachers, He must eat, We mustn't be quiet, They mustn't be nice, You must use your phone, We mustn't do homework , You must be late for school,

PU2 U2 must/mustn't

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