Question

Is this the factory _____you visited yesterday? a.the b.that c.where d.in which 为什么填b而不是c

Answer 1

这句话其实就是 you visited （the factory） 先行词factory 做定语从句的宾语，不是地点状语，因此不用where，用that或which

Answer 2

定语从句的关系代词的确定要以从句的成分来确定，最关键的是要看从句中的动词是否是及物动词，如果是及物动词，那么就有宾语，如果是不及物动词，那么就不需要宾语。这里visited是及物动词，所以从句缺一个宾语，因此that或者which就作宾语。平时就要注意：时间作先行词不一定作时间状语，地点做先行词不一定作地点状语。
例如： I still remember the day that/which I spent with my father in the country.
This is a good place that/which I have ever visited before.
老师祝你学习进步！
望采纳，多谢！^_^