it's necessary that the problem__in some way or othera.is settling b.was settled c.be settled c.has been settled括号内选哪个表示哪种虚拟语气的用法

分类: 作业答案 • 2021-12-19 16:13:14

问题描述：

it's necessary that the problem__in some way or other
a.is settling b.was settled
c.be settled c.has been settled
括号内选哪个表示哪种虚拟语气的用法

答

C...

答

c.be settled
it's necessary that 主语 + should(可省略)+ 动词原形

it's necessary that the problem__in some way or othera.is settling b.was settled c.be settled c.has been settled括号内选哪个 表示哪种虚拟语气的用法