怎样分清楚定语从句中is this factory----you visited last year?A .the on

怎样分清楚定语从句中is this factory----you visited last year?A .the one B.that C.which D.where
像这种题型的选择题该用什么?that还是the one is this factory----you visited last year?A .the one B.that C.which D.where 这两种类型的,另外请在举出一些比较难搞的例子让我思路清晰一点的~

我给你你想要的另外两个看起来很像的句子
1.Is this the factory----you visited last year?则用which/that
2.Is this the factory----you worked last year?则用where
需要详细讲解再说