He ___appeared to be always about ___I had done A,what B,that ,C,which ,D,where

题目

He ___appeared to be always about ___I had done A,what B,that ,C,which ,D,where
对不起打错了,appeared前没有空 实在不好意思

答案

A,what
what引导宾语从句,作介词 about 的宾语,并且what在宾从中也是作宾语的
其他几个中that不充当成分,且不能用于介词后; where不能在宾从中作宾语,which意思不适合.
因此,答案选A.
句意:他好像总是谈论/议论我所做过的事.