这里involved 和involving 怎么区别啊?第二个空格是that 引导的同位语从句吗?
问题描述：
这里involved 和involving 怎么区别啊?第二个空格是that 引导的同位语从句吗?
There is a new problem ______ in the growth of private cars ____ road conditions need to be improved.
A involving ; that B involved; that Cinvolving ; which
答
that的先行词是new problem
involving的用法我没怎么见过,一般都是involved