Who is the man ____ is reading a book under the tree A.that B.whose C.which D.what为什么选A不选C,请详解,
问题描述：
Who is the man ____ is reading a book under the tree
A.that B.whose C.which D.what
为什么选A不选C,请详解,
答
A
先行词是人the man,而which 只能指事物
that 既可以指人也可以指物
who 只能指人