Things were not ———they had been beforeA.where B.as where可做been的表语,也可做关系词,为什么不能选A呢?请高手帮我详细解释一下,谢谢!

Things were not ———they had been beforeA.where B.as where可做been的表语,也可做关系词,为什么不能选A呢?请高手帮我详细解释一下,谢谢!
Things were not ———they had been before
A.where B.as where可做been的表语,也可做关系词,为什么不能选A呢?请高手帮我详细解释一下,谢谢!

Things were not ———they had been beforeA.where B.as where可做been的表语,也可做关系词,为什么不能选A呢?请高手帮我详细解释一下,谢谢!
这句话的意思应该是：事情不像原来那样.where是表示地点的,与原句意思就不符合了.

Things与where不搭配，换成the place就可以用A了