Answer:
3 A: I haven't got any money.
B: Don't worry. I will pay for your ticket.
4A: We will buy a new computer next month.
B: Really? That's great!
5A: Oh, look. Emma's here.
B: Really? I will go to say hello.
6A: Will you visit Sarah on Sunday?
B: No. I must stay home.
7A: I bet Andy forgot Nadia's birthday.
A: WHat do you need all this for?
B: Dad forgot that he is going to paint my room.
B: Yes, he always forgets her birthday!
8A: Oh no! Look at those clouds. It will rain!!
A: Someone's at the door.
B: Oh, ok. I will open it.
B: Dont worry. I've got an umbrella.