A. Do you think who has a computer? B. Do you need my help? C. Of course. D. Could I please use your computer? E. It's the newest and best of all.

A: Hi, Wang Feng. What are you doing?
B: I want to play computer games.    1   
A: Sorry, I'm working on it.
B:    2   
A: Let me see... Oh, Li Xing has one. But I think he mustn't lend it to you.
B: Why?
A: His father bought it to him yesterday.    3   
B: Let me have a try.
A: Hello, Li Xing.
C: Oh, it's you, Lin Tao.    4   
A: Yes. Could I please use your computer?
C:    5   . What are you going to do on it?
A: I want to look up some information about 2012 London Olympics.
C: Looking up some information about 2012 London Olympics? OK, here you are.
A: Thanks a lot.
C: You're welcome.