it is aready 5'o'clock now,do not you think it is about time___?

问题描述:

it is aready 5'o'clock now,do not you think it is about time___?
A we are going home B we went home C we go home D we are go home
为什么选 B而不是C?

It's about time sb.+过去式
这是虚拟语气的一种用法
比如:
It's about time I went home.
我该回家了