单选题He ______ unwisely, but he was at least trying to do something helpful.Amay have actedBmust have actedCshould not actDwould not act

单选题
He ______ unwisely, but he was at least trying to do something helpful.
A

may have acted

B

must have acted

C

should not act

D

would not act


参考解析

解析:
尽管他的行为不够明智,但至少他在努力做一些有益的事情。may用于从句中表示让步,不管,不论;尽管。must have acted用在此处语气不正确。由从句可知,事件发生在过去,故C项D项不可选,前后时态搭配不一致。

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