It's time that we collected our reports.为什么用过去式?

It's time that we collected our reports.为什么用过去式? It's time that we collected our reports.是同位语从句还是定语从句? It's time that we set about doing our homework. it's high time that we did sth.这里为什么要用虚拟语气? it's high time that we did sth.这里为什么要用虚拟语气? it's late.it's time we went home.为什么不用go又为什么是过去式哦 “It is time that we began our class,”said the teacher.请问为什么是 It's time that we should get up.和It's time that we get up. “It is time that we began our class,”said the teacher.请问用虚拟语 It’s high time we _______ our disputes. it's our choices that make us who we It’s time that we went to bed.