一道英语时态问题I'm rather tired;I __ since this morning.A was doing housework B have done housework C did housework D have been doing housework选哪个为什么

分类: 作业答案 • 2021-12-20 02:41:26

问题描述：

一道英语时态问题
I'm rather tired;I __ since this morning.
A was doing housework B have done housework C did housework D have been doing housework
选哪个为什么

答

一道英语时态问题I'm rather tired;I __ since this morning.A was doing housework B have done housework C did housework D have been doing housework选哪个 为什么