题目内容

【题目】By the end of last week we ___________ 200 pictures from the spaceship.
A.receiving
B.received
C.have received
D.had received

【答案】D
【解析】句意:到上周末为止,我们已经收到了来自宇宙飞船的200张图片。the end of last week是表示过去的时间,收到图片是过去某个时间之前发生的事,用过去完成时。故选D.

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