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单选题 The room is in a terrible mess; it ______ cleaned
学科：默认课程
时间：2026-04-19 00:28:46
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题目1单选题
John ______ be working in his office now because I saw him only ten minutes ago in the shopping mallA. mustn'tB. isn'tC. can'tD. may not
题目2单选题
We will never give in whatever they ______ say or doA. canB. mayC. shallD. should
题目3单选题
My pain ______ apparent the moment I walked into the room, for the first man I met asked sympathetically: "Are you feeling all right?"A. must have doneB. had beenC. must have beenD. had to be
题目4单选题
Research findings show we spend about two hours dreaming every night, no matter what we ______ during the dayA. must have doneB. would have doneC. should have doneD. may have done
题目5单选题
The lecturer was a tall thin man with white hair. Then it ______ Dr. Bell because he is short and fat. It ______ Dr. Jones; he is thinA. can't be, must beB. can't have been, must have beenC. must be, can't beD. couldn't have been, might have been
题目6单选题
Mary ______ my letter; otherwise she would have replied before nowA. couldn't have receivedB. ought to have receivedC. has receivedD. shouldn't have received
题目7单选题
The room is in a terrible mess; it ______ cleanedA. can't have beenB. shouldn't have beenC. mustn't have beenD. wouldn't have been
题目8单选题
He ______ unwisely, but he was at least trying to do something helpfulA. may have actedB. must have actedC. should actD. would act
题目9单选题
The door of the classroom is closed; they ______ the class nowA. should be havingB. must have been havingC. haveD. must be having
题目10单选题
Surely nothing ______ going on there at 11 o'clock last nightA. could beB. must beC. need beD. shall be
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