I called Mr'Smith at his office this morning,but the voice ____ answered the phone was not his.

问题描述:

I called Mr'Smith at his office this morning,but the voice ____ answered the phone was not his.
A.whichB.who C.asD.whom
答案A是指代的前面哪个词

你可以自己推断下啊,意思是,接电话的声音不是他的.
指代voice .一般先行词紧跟关系代词.which 作表语