must not have been;could not have

must not have been;could not have he-----blind not to see that car cominga can hve been b will have been c may have been d must have been Mary was not in her bedroom yesterday afternoon.She___in her classroom.A.should have been B.must have been C.must be D.should be I did not hear the phone,I___asleep.A.must be B.must have been C.should be D.should have been An ambulance (救护车) is waiting in the street.Somebody _____ hurt or killed.A：should have been B：must have been C：should be D：should not have been must have been done must have done must have/ must have been的区别 If it had not been for literature,the well-known writer Rowling the world wide attention.A.could not attract B．must not attract C．would not have attracted D．should not have attracted Mary was not in her bedroom yesterday afternoon.She ______ in her classroom.A:should have been B:must have been C:must be D:should be 选哪个 为什么 You should not have swum in that river.You ____ have been eaten by fish.A.must B.may C.will D.might He looks tired,he _______ too little sleep.A must have had B must have C must have been he must have been there before-----a.has not he b.have not he c.dose not he d.is not he 我记得类似的问题 都是看 主语是第几人称的 如果是的话 must not have He can't find his key.He ---------- them.A.must lost B.must have been lost C.must have lost The young man has made so much noise that he ( ) not have been allowed to attend the concertA could B must C would D should You ( )be tired .you have only been working for an hour.A.must B.wont C.cant D.may not You have been well prepared for the exam,so there___be any difficulty in your passing it.A.must B.may not C.needn't D.shouldn't 请问这怎么翻译的,thanks怎么选择Had electronic computers not been invented, many problems of space flight ______ now. A. could not have been solved B. could not be solved C. must not be solved D. should not have been solved