He isnt such a man he used to be. A. who B. whom C. that D. as

问题补充：

He isn such a man he used to be.

A. who

B. whom

C. that

D. as

答案：

A. who

B. whom

C. that

(答案→)D. as

解析：such……… as是固定用法,as引导定语从句时,可以作主语,宾语或表语.在本题中,as作表语.