[听力原文]6-7
W: Good morning. Mr. Power’s office.
M: Good morning, I’d like to speak to Mr. Power please.
W: I’m sorry, sir. Mr. Power is busy at the moment. Would you like to leave a message
M: Well, can I speak to Mr. Sharp then
W: Mr. Sharp is out of town, sir. He won’t be back until next Monday.
M: I see. Well, when do you think Mr. Power will be free I’ve got to talk to him as soon as possible. It’s very urgent.
W: He’ll be free in a couple of hours. Shall I tell him to call you back later
M: All right. My number is 203-4657.
W: 203-4657
M: Yes. I’ll be waiting here in the office.
W: All right, I will tell him. Good-bye.
M: Good-bye.

Why isn’t Mr. Sharp available at the moment（）