Bonjour ,
voici ma réponse :
1. You mustn't sleep in school .
2. You must raise your hand if you want speak .
3. You must be on time at school .
4. You must turn off your phone before to go to the school .
5. You mustn't smoke in school .
6. You mustn't talk with your classmates in classroom .
7. You must do your homework at time .
8. You have to close the door when you come back last.
Bon j'espère t'avoir aidé et bonne journée .