问题描述：
名词性从句引导词who/whoever区别
DIY books are of great help to _ may choose to do things themselves.
A.who B.whom C.whoever D.whomever
为什么选择whoever不能用who?有什么区别吗?
DIY books are of great help to _ may choose to do things themselves.
A.who B.whom C.whoever D.whomever
为什么选择whoever不能用who?有什么区别吗?
问题解答：
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