It's time we ___ to bedA.must go B.will go C.went D.have gone为什么选C啊?还有选A为什么不行

It's time to ___ _____ It's time to ___ _____ It's time to go to bed 同义句转换It's time ___ __ 一、句型转换Let's discuss how we are going to get there.let ___ discuss ___ ___ get there.Shall we go swimming tomorrow?____ ____ going swimming tomorrow?It's time for supper.It's time ___ ___ supper.We will have fun on your birthday.We will __ It's time ___ do homework.a.to b.FOR -----We'll do what we can ___ english well this term.----It's hgh time for you to workhard.A.study B.to study C.be studied 休息的时间到了 用英语怎么说It's time to ___ ___ ___It's time for ___ It's time to have a class.It's time ___ ___.要求:改为同义句． it's time for _____(we) to make the beds. it'e time for ___.it's time to ____.(dinner)教教我吧, It’s time that we went to bed.It’s time that we should go to bed.什么区别? It's time to It's time to It's time that I must go to school.改为同意句It's time___ ___ ___ go to school. Tom,该上学了翻译Tom,it's time ___ ___ to school Did you go there before?No,I ____. It's my ___ time to ___ there. tell him we're leavingit's time to goshe's running to usthat's it It's time we ___ to bedA.must go B.will go C.went D.have gone为什么选C啊?还有选A为什么不行