Complete the exchanges,using the following modal verbs: can't,can,need,needn't,must,have to,might, should.Make the necessary changes.
1.A: You(not/buy) me a present.
B:I hope you will like it.
2.A:I was really bored last night.
B:You(come) to the theatre with us. We enjoyed it a lot.
3.A:It hurts so much
B:You(break), you arm.
4.A:I thought I saw Sam two days ago.
B:You(see)him.He's been away on holiday for over a month.