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Thedoorbell

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问题详情:

Thedoorbell

The doorbell _______ for more than five minutes, but there’s no answer.


     A. was ringing                    B. rang        C. had been ringing             D. has been ringing


【回答】

D

知识点:现在完成进行时及其被动式

题型:选择题

标签:Thedoorbell