Is this factory ( ) we visited last year.

问题描述:

Is this factory ( ) we visited last year.
A.where B.in which C.the one D.at which
This is the book I bought yesterday,( ) I spent 8 yuan.
A.for which B.in which C.at which D.on which

C特指去年参观的那个
D spend on sth 固定词组花费……在……上