Some of the students were late for the meeting,but I can’t remember _____.

题目

Some of the students were late for the meeting,but I can’t remember _____.
　　A.what B.when
　　C.which D.whom
　　此题最佳答案为C.句意为“有些学生开会迟到了,但我不记得是哪些学生了”.
为何不选whom?

答案

后面的空其实是个省略,which是which ones的省略.还可以说是who were late for...,remember后面的从句需要的是主语,whom只可以做宾语