Complete the list of the rules at school. use must,should, should't, have to,has to : polite 2) say hello when you see a teacher 3) to school on time 4) up when a teacher comes into the classroom 5) or drink in the classroom 6) bring mobile phones to class 7) in the corridors.
2. you should
3. you must
4. you have to
5. you shouldn`t
6. you shouldn`t
7. you shouldn`t