How could I thank you enough?Don't mention it!Any other man__it.A.must do B.could do

问题描述:

How could I thank you enough?Don't mention it!Any other man__it.A.must do B.could do
C.would have done D.should have done
这个题怎么选啊?有什么依据啊?

这个题的正确答案是C.这是一个虚拟语气句子.
前者表示感谢,后者说“不用客气,换了任何人也都会这么做的.”
事实上不是别人,而是回答者本人做的.
这种对过去发生过的事情进行虚拟假设,条件句谓语要用had done,主句谓语要用would have done.本句的条件省略,“如果我不做”.所以正确答案是C