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--- You don’t forget when we borrowed that reference book, do you?--- I can’t re

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--- You don’t forget when we borrowed that reference book, do you?--- I can’t re

--- You don’t forget when we borrowed that reference book, do you?

--- I can’t remember now but ______ sometime last week?

A.might it be

B.could it be

C.could it have been

D.should it have been

试题答案

C

考查情态动词。句意为“你想不起是什么时间借的那本参考书啦,对吗?我现在不记得啦,可能是上周的某个时间吧。”情态动词+完成时态表示对过去的推测.could表示可能性;should表示过去该做而没有做的事。表示可能性的用法是高考必考点之一。