一道定语从句题目(马上解答)

题目

一道定语从句题目(马上解答)
Human facial expressions differ from those of animal in the ____ they can be controlled on purpose.
A.with which B.to which C.for which D.of which
于是选什么.并说明解题思路.
不好意思是in the degree
一楼错了哟
三楼错了哟
于是三楼是选什么呢
对了......
但是我没懂....具体点好么?
四楼那个be controlled with 为什么是TO WHICH呢?不是WITH WHICH
啊四楼的错了......不好意思

答案

找到正确的了.从句主谓成分完整,缺少状语 to the degree = to the extent 表示到达某种程度.句中degree就是先行词 还原从句就是they can be controlled to the degree on purpose TO嘛,B楼,不对吗?- -首先to the deg...