Fill in must, or mustn’t.

A.G. Baillie Secondary School Rules
1) You ... run in the halls at school. It’s forbidden.
2) You ... treat your teachers with respect. That’s the rule.
3) You ... be mean to your classmates.
4) You ... do your homework every night.
5) You ... talk in class.
6) You ... eat or drink at your desk.
7) You ... be on time.
8) You ... always wear your school uniform.