words are like windows___we can look into the pastby which in which through which of which

问题描述:

words are like windows___we can look into the past
by which in which through which of which

应为through which

through which
因为which代前面的window,其介词为through

through which.
这里是介词+which 引导的定语从句,表示通过窗户,即through the window,在定语从句中用关系代词which 替代the window,故答案为though which

from which

through which
原句精简后可为:through windows we can look into the past
此句是将words形容为windows而已,透过窗户应该用through