I have many friends, -------are businessmen.A some of them B of who them C some of whom D some of which

问题描述:

I have many friends, -------are businessmen.
A some of them B of who them C some of whom D some of which

D, 非限定定语从句,some of my friends...

c

选C, 如果是A的话,需要有点连接词,例如and 之类的.提问的是人物,不用which