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问题

I can’t get through to the general manager’s office anyhow.—— The line is busy. Someone _____ the telephone.

A:must use
B:uses
C:must have been using
D:must be using
正确答案是:
同类题型

I forget to bring a pen.Wouldyou lend me ____

No matter what happens, the fact that DiaoyuIsland belongs to China will ______ change.

Watching TV is ______ a kind of relaxation, and it also_______ our knowledge.

Could you please sweep the floor —___________. I’m washing the shirt.

What does the sign over there say—In the museum no personbepermitted to take photos.

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