题目内容：

She had two sons,___became teachers.
A.all of them
B.all of whom
C.both of them
D.both of whom
The weather turned out to be very good,___was more than we expected.
A.what
B.which
C.that
D.it

优质解答

选D.both of whom这边用到了一个逗号,且没有连接词连接,所以后面的句子需要用从句形式,否则两个句子不能简单的相加.所以排除A和B,另外,两个人“都”用both,三个及三个以上用all,所以玄D选B.which两个句子不能简单的...

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