come in/come onWhen the chance come ------,you should take it

问题描述:

come in/come on
When the chance come ------,you should take it

in come on 为开始;快点;前进;开始工作

填come in,意思是当机会来临时,你要抓住.come on更多的是“快点、加油、开始工作”的意思.