A.who are you?
B.don't ask me. 
C.I don't know. 
D.would you please ring them up this afternoon?

A.This is Jim. Who's speaking, please?
B.I'm afraid I won't be free. 
C.This is the right number.
D.There's no hurry.

A.I am fine. 
B.I am not sick. 
C.I am a student from Bonn University. 
D.I came from Bonn University.

A.He is over forty 
B.He's a doctor 
C.He's much better
D.He's Brown

A.Sorry, he is busy at the moment.
B.No, you can't. 
C.Sorry, you can't.
D.I don't know.

A.My name is Zhao Hua
B.I'm Zhao Hua 
C.This is Zhao Hua speaking
D.Zhao Hua is me

A.Yes, I am Clinton.
B.Thank you for calling me.
C.This is Clinton speaking. 
D.Yes, who are you? 

A.You are wanted on the telephone.
B.Who are you
C.Just a second, please.
D.Can I take a message for him

A.I'm Liu Mei
B.Liu Mei is me
C.My name is Liu Mei
D.This is Liu Mei speaking

A.Sorry, I don't know you 
B.No, you can't 
C.Certainly. Wait a minute, please 
D.Let me see