Помогите выбрать правильные ответы.
Read and underline. Then act out.
1 A: You must/mustn't put your hand up to ask a question.
B: OK, Miss.
2 A: What's the matter.Officer?
B: You must/mustn't park your car here.
3. A: You must/mustn't do any sports for two weeks.
B: OK, thank you, doctor.
4 A: You must/mustn't buy a ticket before you get on the bus.
B: Really? Where do I get one from?