We must have been drunk last night,_____?A.weren't we B.mustn't we C.hadn't we D.didn't we老师说 选D 但为什么不选A啊?

must have been done must have done must have/ must have been的区别 we went to Italy for a holiday last year. That must have been nice. 问题：为什么用must have been为什么不用must be? We have been ```` The train has just left when we arrived at the station.We ________.must hurry should have hurried need to have hurried must have been hurrying must not have been;could not have It's raining out side.______there tomorrowA we have been to B we'll have to go C we must have to go must have been与must have done的区别? We must value what we have It Must Have Been Love (Cologne) 歌词 请问：有没有must have been? It Must Have Been Love 歌词 We would have been very We have been moving fomward! In a country which must certainly have been a long way away from where we Romanians live.怎么译? must have been done/must be done求解两者异同 must be和must have been有什么区别he must have been sleeping.为什么这里要用must have been而不用must be be,must be,can't have been,must have been吗