Complete the conversations.
1 What did the head teacher say?
a)We've tidied the classroom.
b)We have to tidy the classroom.
c)We mustn't tidy the classroom.
2 Can I help you to do the washing up?
a)Sit down.You don't have to help.
b)Sit down.You mustn't help.
c)Sit down. You shouldn't help.
3 What's the matter ?
a) You should speak with food in your mouth.
b) You shouldn't speak with food in your mouth.
c) You must burp.It's rude.
4 Does Dan know that you're going on holiday?
a) No,should I tell him?
b) Yes, I know he is.
c) No, I've told him.
5 How's your foot? What did the doctor say?
a) I mustn't play sport for a month.
b) I fell down the steps.
c) I should play sport for a month.