The book cost me 20 yuan (改为同义句)I ____20yuan_____the book.为什么是spend on而不是pay for?
问题描述：
The book cost me 20 yuan (改为同义句)
I ____20yuan_____the book.为什么是spend on而不是pay for?
答
spent , on
答
I _spend___20yuan__on___the book.
如果用pay for应该是这样的：
I pay 20yuan for the book.