题目内容
— Do you still remember when we went to Nanjing?
— I can't remember now but ________sometime last summer?
- A.might it be
- B.could it be
- C.could it have been
- D.should it have been
C
情态动词加现在完成式,表示对过去的推测,could表可能性,should表过去该做而没做的事。
情态动词加现在完成式,表示对过去的推测,could表可能性,should表过去该做而没做的事。
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