Question

Is this the factory ----you visited the other day?

A.that
B.the one为什么不能选？

Answer 1

This is the factory that you visited the other day !不缺少先行词！先行词是factory！所以你要加the one 就 多余了！若改为；Is this factory -----you visited the other day 就可以了 选B！所以本题答案是A！

Answer 2

填that因为这是一句定语从句，the factory 是先行词，在定语从句中做visited的宾语，所以需要填关系代词that ，而the one不能做关系代词引导定语从句。

Answer 3

B.the one指代factory在主句中要充当成分，而前文已经出现the factory 而且还原句子this Is the factory中不缺成分，用.that 引导的是同位语从句

Answer 4

因为that 可以做定语从句的先行词，而the one 不可以。