You must raise you hand...
You must study hard...
You mustn't sleep...
You mustn't arrive...
You must listen to...
You must bring your...
You mustn't play in class.
You must finish your exercises...
You mustn't bully...
You mustn't forget your...
You mustn't shout at the...
You mustn't use your...
You must ask the teacher if you...
You mustn't eat in...
You mustn't cheat in your...
You must pay attention...
