考试
2020-03-16 07:14:21

2888 Some people may have been

题目描述

Some people may have been daunted by the task because of the difficulties it brings, but I



Some people may have been daunted by the task because of the difficulties it brings, but I do not know of______.

A.them doing so

B.any having done so

C.their doing like that

D.any doing that way

请帮忙给出正确答案和分析,谢谢!

答案解析

B用any与not呼应,用完成式表示"至

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