您的位置: 首页 > 作业答案 > 英语 > To buy a ticket ,you__ line up ai this window用must have to mustn't选一

To buy a ticket ,you__ line up ai this window用must have to mustn't选一

分类: 作业答案 • 2021-11-30 10:23:09

问题描述：

To buy a ticket ,you__ line up ai this window用must have to mustn't选一

答

选have to,must是主观的必须,have to是客观的必须,不得不