1. We don't have to (b) do homework every day at my school.
2. We can't stay (e) in the classroom during the break.
3. Pupils mustn't (a) chew gum during lessons.
4. You should get (c) a note from the doctor when you're ill.
5. Pupils can leave (f) when the bell goes.
6. You shouldn't copy (d) other pupils' work.