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Isthisfactoryyouvisitafewmonthsago?yes,butitisn'titusedtobe.Atheone;whatBone;thatCthat;theoneDtheone;theone答案选哪一个,为什么?

题目详情
Is this factory__you visit a few months ago?yes,but it isn't___ it used to be.
A the one; what B one; that
C that; the one D the one;the one
答案选哪一个,为什么?
▼优质解答
答案和解析
原句可改成this factory is ____you visit a few months ago. yes,but it isn't___ it used to be.
前一句是表语从句,is 后面少了先行词 所以用the one 代替
后一句也是表语从句,少了宾语 用WHAT