must-mustn't

You..............obey the school rules.

You ..............run in the class.

You................listen to your teacher carefully.

You.............cheat in the examinations.

You..............play football in the class.

You ............make noise during the lesson.

You ............eat and drink in the lessons.

You............be quite in the library.

You..............be rude towards your friends.

You............chew gum.