问题描述：
I have many friends_ some are bussinessmen
I have many friends_ some are bussinessmen.
A.of them
B.from which
C.who of
D.of whom
想问问为什么不能选A,参考了百度其他相同问题还不是很明白
I have many friends_ some are bussinessmen.
A.of them
B.from which
C.who of
D.of whom
想问问为什么不能选A,参考了百度其他相同问题还不是很明白
问题解答：
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