一些从句的英语问题This is the last factory (which) she used to worked at.书上写着,定语从句中先行词被the only the very the same the last 修饰时.后面必须用that 为什么上面那道题目用which

问题描述:

一些从句的英语问题
This is the last factory (which) she used to worked at.
书上写着,定语从句中先行词被the only the very the same the last 修饰时.后面必须用that
为什么上面那道题目用which

是因为可省略吗……所以也不用在意这些细节了=。=
答案给错了吧

正如书上所讲的,这句话里面应该是用that的,并且that经常可以省略.
任何一本语法书都是这么写的.

题目要么出错了,要么答案给错了.