The book( )I spent 30 yuan is well worth reading

问题描述:

The book( )I spent 30 yuan is well worth reading
A which
B that
C on which
D on that
这道答案是C 求原因 谢谢~~~

这里考察的是一个短语
spend some money on sth的短语
然后这里是个定语从句,本来因该是I spnet 30 on the book
所以定语从句之后,也就是选择了C