---（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?
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D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。