表语从句是不能省略that的,但that连接的是陈述句,14题里的从句是what is wrong,不是陈述句,what作为连接词,不用that,你选的D也是错误的,如果加上the thing ,那后面的句子就变成了定语从句,不能用waht引导,只能用which或that,比如说that is the thing which is wrong with him.
表语从句是不能省略that的,但that连接的是陈述句,14题里的从句是what is wrong,不是陈述句,what作为连接词,不用that,你选的D也是错误的,如果加上the thing ,那后面的句子就变成了定语从句,不能用waht引导,只能用which或that,比如说that is the thing which is wrong with him.