"That's must be a mistike" "No,it can't be a mistike."中为什么不能用need't?"

That's must be a mistike No,it can't be a mistike.中为什么不能用need't? That must be what it's all about.中文翻译 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 it's universally acknoeledged that a single man in possession of a good fortune must be in wantof a Any proposals____the computer room___closed must be resisted.A.which;be B.that;must be C.that;be 1.That must be more fun than ( )a bus2.It's about an ( )(hour) ride to get there it's more () to climb that mountain.We must be careful.A,easier B,busier C,most busy D,busiest it's urgent that a meeting _before the final decision is made .A must be arranged B be arranged为什么选B不选A呢? that must be a lot 为什么用more fun 关于It's time that的问题It's time that something ___about the traffic problem downtown.A.should be done.B.must be doneC.is to be done D.was done为什么不能选A呢? It's a rule in my class that our classroom -- before 6.00 pm every day.A.be able to clean B.should be cleaning C.must clean D.must be clean what's wrong with your car?A.must be repairB.must be repaired原因是什么 it's necessary that you____the entrance examination为什么要用should be不用must be that girl must be Amy “Will you go to John's party?” “It’s said that there must be _______ interesting people.” (5 分)A.so B.alotof C.much D.verymuch what counts most ir that one`s confidence must be ture of one`s real case 一道初二的题：must be 与 may beI'm afraid I______be going.It's too late.A.must B.can C.need.D.may 在本题中,must be 与may be 的区别到底在哪呢?另有类似一题：Who is that boy in a red coat?It ____ Tom.He likes red coat.A.must This book ( ) Bob's.Look!That's his name.This book ( ) Bob's.Look!That's his name.A.may beB.must beC.can't beD.mustn't be说明原因