单项选择题
[听力原文]6-8
M: Number, please
M: Oh, I’d like to make a transferred charge call.
W: Where to, sir
M: Northfield, Minnesota.
W. What number
M: 456 - 582 - 8642.
W: Whom are you calling
M: John Walker.
W: May I have your name
M: Shawn Young.
W: How do you spell your last name, please
M: Y-o-u-n-g.
W: And where are you calling from
M: 984 - 654 - 8893, Portland.
W: Thank you, sir. Hold the line, please. I’ll put you through.
A．To wait till the telephone rings again.
B．To wait until the line is free.
C．To wait for his friend :to call back.
D．To wait while she tries to put him through to Mr. Walker.