Read and circle.
1 You must/ ought to switch off mobile phones at the cinema. This is a rule.
2 You should/ don't have to listen to instructions in class or you won't understand.
3 You have to /mustn't talk when the teacher is talking. It's very rude.
4 You ought not to / don't have to be at school ten minutes early, but it's a good idea.
5 My mum says I have to / shouldn't stay up late on school days because I'll be tired.