The old lady had a son and two daughters，________treated her well，which made her very sad.
A.no one of whom
B.none of whom
C.neither of them
D.none of them
网友回答
B解析none既可指人也可指物，常暗示一定范围，因此通常与表范围的of短语连用；而no one(=nobody)只能指人，不能与of短语连用，neither表示两个都不，them不能做引导词，故选B。