一道高中英语题please put the books where they were

问题描述:

一道高中英语题please put the books where they were
please put the books_____-they were
A where B.in which
为什么选where .不能选B.? where不是等于in which 么

这是个地点状语从句,不是定语从句,所以这里不可以用in which
全句意为:
把书放到原来的地方