I don't know the teacher ( ) is talking with Miss wang.

问题描述:

I don't know the teacher ( ) is talking with Miss wang.
I don't know the teacher ( ) is talking with Miss wang.
A what B whom C which D who

选D
此题为定语从句,先行词为teacher,在句中作主语,为“人”,所以用关系代词who来引导
A选项不是关系代词,排除
B选项whom引导的先行词为“人”,但只可作宾语
C选项which引导的先行词为“物”,可作主语,宾语
D选项who引导的先行词为“人”,可作主语,宾语
所以此题选择D选项