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I you, but I was busy all the time yesterday afternoon. A. could help B. had hel

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I you, but I was busy all the time yesterday afternoon. A. could help B. had hel

I _________ you, but I was busy all the time yesterday afternoon.

A. could help B. had helped  C. helped D. could have helped

 

试题答案

D

 

英语中,“情态动词 + 完成时”表示“本来……”,讲过去的情况。could have helped:本来能帮助