【題目】It____these students three hours____their homework yesterday.

A. takes; finish B. took; finished C. will take; to finish D. took; to finish

【答案】D

【解析】句意：昨天完成他們的作業(yè)這些學(xué)生花了3個小時。It takes sb. some time to do sth. 是固定句型，意為"花費某人多長時間做某事"。由yesterday可知此句用一般過去時，所以用take的過去式took。故選D

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