All of us__look after our parents when they are old A.could B.may C.should D.can

分类: 作业答案 • 2021-12-19 21:43:15

问题描述：

All of us__look after our parents when they are old A.could B.may C.should D.can
什么意思？翻译一下

答

C 应该表义务