--- （on the phone）Hello, Well, I can’t find her telephone number now. Can you get back to me in fifteen minutes?
--- All right, thanks!Bye-bye.
A. wait a minute.
B. hold on.
C. what for?
D. are you there?
网友回答
A. wait a minute.
B. hold on.
C. what for?
(答案→)D. are you there?
解析：Are you there?为打电话中沉默了一会儿后（如一方在找人或核对东西），再呼叫时的用语。