主从复合句【1】道题：

题目

主从复合句【1】道题：
1. His head soon appeared out of one of the second storey windows,______ he oculd see nothing but tress.
A.from which B.from where C.where D.from there
请解释A,B,C对或不对的原因.

答案

我觉得选A.
A是定语从句,先行词是one of the second storey windows
from one of the second storey windows he could see nothing but trees.
只有这一种可能,B从来没有这种说法.C其实也可以但不如A确切,where可以=from which,in which,at which,on which..etc