It was in the ___my father worked.填where 还是that ,为什么?

It was in the ___my father worked.填where 还是that ,为什么? It was in the factory_____my father worked.答案是where,为什么不能填th it was on the farm___we worked.填that,where有什么区别? It was in the factory_____my father worked.答案是whe... My father worked in the factory for forty years,(where;that; It was in the cinema where I regularly go.为什么用where,不用that? It was the factory _____ I workde ten years ago.填where还是that It was in the factory _____ I workde ten years ago. 填where还是 It was in the factory----his father worked for 10 years ---- 填个连接词.为什么?It was in 1845 _____my father made the decision to 英语定语从句问题It is on the farm ——we worked.为什么填where 不填that,这不是强调 Where did you see LiLy?It was in the office_____she worked.