This is the book I bought yesterday , I spent 8 yuan .A. on which B. for whichC. in which

This is the book I bought yesterday , I spent 8 yuan .
A. on which
B. for which
C. in which
D. at which

(答案→)A. on which B. for whichC. in which D. at which解析：本题考查定语从句中介词的选用。spend some money on sth为一固定搭配。故选A。

这下我知道了