We'll have a B holiday soon.A)three days B)three-day C)three-days D)three days' 为毛不选D,还有D选项什么时候用.怎么用.

分类: 作业答案 • 2021-12-19 23:57:49

问题描述：

We'll have a B holiday soon.A)three days B)three-day C)three-days D)three days' 为毛不选D,
还有D选项什么时候用.怎么用.

答