she can't have written to me , or ___ the letter by nowA I'd get B I'll have got C I'd have got答案为C 原因是什么呢 一直不明白‘d是had 还是 would 什么情况'd可以缩略写?

she can't help you because she doesn't have time.=she can't help you because she____ ____. She can't have been Danish. and She must have been Swedish. She seems to know nothing about the accident.She ____ been here.(can't have,mustn't have).二选一 She can t get she can run, can't she翻译 She ____ the film. She knows nothing about it. A. can’t see B. can’t have seen C. mustn’t have seen D. must see She was ill,She can t have attended the meeting here为什么用can t have attended 而不用 could not be able to attend can’t +have done Tina ___ the truth,otherwise she would have told us.A.mustn't have knownB.shouldn't have knownC.can't have known can’t / couldn’t have Where _____?She _____ to school,for it's Sunday today!A.can she go,can't go B.may she go,may我选择的是A.为什么错了?Where _____?She _____ to school,for it's Sunday today!A.can she go,can't go B.may she go,may not goC.can she have gone,can't from what you said ,she(can't have told)you about it?括号里为什么? 10.Lily isn’t here.She ______ have gone to the school library,or she ______ have gone to the meeting room,or she ______ have gone home.Who knows?选may,must,can,can't should she isn't feeling well these days ,so she---stay at home now A.can B.must C.can't D.have to She doesn't have a She doesn't have children. 1、Let ____(she)have dinner.2、I don't have _____(some)water.Can you give me ___(some)? 8.---Jane walked past me without greeting.----She _____ you.A.can't have see B.couldn’t see