问题描述：
who,whoever,whom,whomever
At last we came to a conclusion that it was a question of( )had really contributed to the development of human society.
A.who B.whoever C.whom D.whomever
选A
为什么选A啊,of不是介词吗,whom跟介词啊?
谁跟我讲讲这四个词吧,谢谢..
At last we came to a conclusion that it was a question of( )had really contributed to the development of human society.
A.who B.whoever C.whom D.whomever
选A
为什么选A啊,of不是介词吗,whom跟介词啊?
谁跟我讲讲这四个词吧,谢谢..
问题解答：
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