He doesn't give up and keeps on ____ (try) to find his lost child these years.
问题描述：
He doesn't give up and keeps on ____ (try) to find his lost child these years.
填什么,为什么,整句的意思是什么?
答
keep on doing sth 一直持续做某事,所以填 trying
这些年来,他一直没有放弃去试图寻找他走失的孩子你们几个加起来的才比较完整呢