You must/mustn't listen when your teacher is talking.
must
You must/mustn't talk when your teacher is talking.
mustn't
You must/mustn't be prepared for class activities.
must
You must/mustn't forget your school things.
mustn't
You must/mustn't be rude to others.
mustn't
You must/mustn't treat friends fair.
must
You must/mustn't be clean and calm.
must
You must/mustn't take care about school things.
must
You must/mustn't break school tables.
mustn't
You must/mustn't raise your hand to speak to the class.
must
You must/mustn't speak when the other pupil is answering to the teacher's question.
mustn't
You must/mustn't fight in class.
mustn't
You must/mustn't cheat on the test.
mustn't
You must/mustn't remember about tests.
must
You must/can revise for a test.
can
You must/mustn't help others when they ask for help.
must
