单选题
There was a second knock at the door. It was the second time I _________ that afternoon.
A、
was interrupted
B、
was interrupting
C、
had interrupted
D、
had been interrupted
【正确答案】
D
【答案解析】
[解析] 本句意为：又有一阵敲门声，这已经是在那个下午我第二次被打扰了。这里应用过去完成时，而且是被动语态。
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