Is this the factory ______ you visited last month?

题目

Is this the factory ______ you visited last month?
A.where B.in which C.that D.the one
是不是都可以?

答案

C
先把句子变为陈述句
This is the factory _____you visited last month.
很清楚发现 ：主句主谓宾齐全,故排除D.
定语从句及物动词visited后缺少宾语,故只能用关系代词作为引导词.A/B只能作状语时使用.