-That must have been a long trip to get there - Yeah ,it______ us a whole week to get there请解释下为什么填took不填has taken

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? 请问句中的‘That's That's how I know the job must have been done. he-----blind not to see that car cominga can hve been b will have been c may have been d must have been ----Wsa that the new school master who walked by?----_______A.It must be that B.It must have been C.He must be D.This must have been为什么选B啊 take a look at that car,it must have been expensive,为什么用have been?为啥不说it must be expensive? It's the frist time that I( )asleep then.A.must be B.must have been C.should be D.should have been为什么 must not have been;could not have I believe that,as long as paid there must have been harvested语法对么 and orders have been given at the box-office that it must never be sold Most students felt disappointed at the party.They said that it ___better organizedA.had been B.could have been C,must have been D.would be must have been与must have done的区别? 6.---Was that new school master who walked by --- _____.A.It must be that B.It must have beenC.He must be D.This must have been请问这个题为什么选B that must have done the It Must Have Been Love (Cologne) 歌词 请问：有没有must have been? It Must Have Been Love 歌词