2.He works too hard.That is __________ is wrong with him.

题目

2.He works too hard.That is __________ is wrong with him.
A.that which B.that what C.what D.the thing what
选哪一个,为什么?

答案

C. what
That is 代指He works too hard这件事
____is wrong with him 中what作主语
如果用一般陈述句就是
What is wrong with him