I you, but I was busy all the time yesterday afternoon.A. could helpB. had helpedC. helpe

发布时间：2020-08-17 14:15:18

I      you, but I was busy all the time yesterday afternoon.
A. could help
B. had helped
C. helped
D. could have helped

网友回答

A. could help
B. had helped
C. helped
(答案→)D. could have helped
解析：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
以上问题属网友观点，不代表本站立场，仅供参考！