A) To write a check.

　　B) To find a telephone number.

　　C) To ring up somebody.

　　D) To check the telephone service.

　　W: I’m sorry, but the number you are dialing is not in service.

　　M: But that’s impossible. I just spoke to him this morning. Could you please check it for me?

　　Q: What is the man trying to do?

　　注：operator 接线员