选择恰当的句子，完成对话。

A. I help people. B. I usually get people out of fire. C. I'm a policeman. D. I'm your new neighbour. E. What's your job?

John: Hello, I'm John Chen. I live in Room 301. I moved here last week.

Peter: Hello, I'm Peter. What do you do, Mr Chen?

John:

Peter: That's cool! What do you usually do?

John: Sometimes I catch bad people.

Peter: Do you like your job?

John: Yes.

Peter: I'm a fireman.