He puts his love _______ good use _______ working in a hospital.

问题描述:

He puts his love _______ good use _______ working in a hospital.
A.on ,by B.at ,in C.to ,by D.to ,about 为什么选C啊

选C
put sth to good use 很好的利用某物 这是个短语
by 是通过的意思