一道英语选择题,请说下理由.1.The best work is that _______ Tom has done.

问题描述:

一道英语选择题,请说下理由.1.The best work is that _______ Tom has done.
A.that B.which C.what D.all

答案为:A that
考:定语从句中当代词that(那个)作先行词时,我们只能用关系大概that指代代词that(那个) .
如果把例题中的that去掉,我们选what