This is the book _____we are looking for,为什么填which,

问题描述:

This is the book _____we are looking for,为什么填which,

可以填
which 也可以填that 也可以不用填,省略
这是一个定语从句
先行词是 the book
是物,所以可以用which 或that 来做关系代词
译为:这是我们正在找的那本书.