You ... wear the uniform.
mustn't
must
You ... listen to the teacher.
must
mustn't
You ... play with your phone in the lesson.
mustn't
must
You ... fight.
must
mustn't
You ... help your friends.
must
mustn't
You ... study at school.
mustn't
must
You ... do your homework.
must
mustn't
You ... study English at school.
must
mustn't
You ... eat ice cream in school.
mustn't
must
You ... eat in class.
must
mustn't
You ... arrive on time.
must
mustn't
You ... wash your hands before lunch.
must
mustn't
You ... arrive late.
must
musn't
You ... put litter in the bin.
mustn't
must
You ... sleep in class.
must
mustn't
You ... shout in class.
mustn't
must
You ... follow the rules in class!
mustn't
must
You ... run at school.
mustn't
must