问题描述：
英语中有两道定语从句的选择题 是否能解释一下为什么选择它们?
1）He has to sons,____work as chemists.
A.tow of whom B.both of whom C.both of which D.all of whom
2)The buses,____were already full,were surrounded by an angry crowd.
A.most of that B.which most C.most of which D.that most
(我选的是1）B 2)B 是否能告诉我为什么错了)
1）He has to sons,____work as chemists.
A.tow of whom B.both of whom C.both of which D.all of whom
2)The buses,____were already full,were surrounded by an angry crowd.
A.most of that B.which most C.most of which D.that most
(我选的是1）B 2)B 是否能告诉我为什么错了)
问题解答：
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