问题

I can’t get through to the generalmanager’s office anyhow.—— The line is busy. Someone _____ thetelephone.

A:well off
B:uses
C:must have been using
D:must be using

正确答案是：

同类题型

I told him what I wassurprised____________ his attitude towards his study.

Barack Obama’s victory is a historicvictory and that promised change and overcame centuries ofprejudice

He promised to tell me by himself when I ______

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her admitted that when comesto pop music, he had little knowledge of it.