The bell is ringing.It is time that we _____the class.

题目

The bell is ringing.It is time that we _____the class.
a.begin b.should begin c.are beginning d.began

答案

d.began
这是一个涉及到虚拟语气的问题,你可以看《英语高考必备》动词的语气之虚拟语气
虚拟语气用在It is time that...结构中,表示:该干某事了.含建议意思,用动词过去式