请帮我选择并解释：It's nine O'clock and it's time you___to bed.A.went B.were C.have been D.had been

分类: 作业答案 • 2022-05-18 20:21:36

问题描述：

请帮我选择并解释：It's nine O'clock and it's time you___to bed.
A.went B.were C.have been D.had been

答

A,表虚拟语气，本应当

答

A
虚拟语气,后面句子用过去式.