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    科目： 来源：同步题 题型：单选题

    — There was a lot of fun at yesterday's party. You ________ come. Why didn't you?
    — What a pity! But I had no time because I had lots of homework to do.
    [      ]
    A. must have  
    B. should
    C. need have  
    D. ought to have

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    科目： 来源：同步题 题型：单选题

    -Did your mother sleep well last night?
    -She ________ have slept through all those noises.
    [     ]
    A．mustn't  
    B．may not
    C．can't  
    D．won't

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    科目： 来源：同步题 题型：单选题

    My newlypurchased magazine is nowhere to be found.________ I have left it on the train?
    [     ]
    A．Could  
    B．Should
    C．Must  
    D．Would

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    科目： 来源：同步题 题型：单选题

    -Can Professor Li be in the laboratory?
    -He ________ be; I saw him there half an hour ago.
    [     ]
    A．can  
    B．must
    C．might  
    D．need

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    科目： 来源：同步题 题型：单选题

    He ________ have sent the email at an earlier time, but there was something wrong with the network.
    [     ]
    A．must  
    B．should
    C．could  
    D．might

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    科目： 来源：同步题 题型：单选题

    We can't blame John for the mistake. He wasn't here when we decided what to do, so he ___ about the
    plan.
    [     ]
    A. wasn't know  
    B. was known    
    C. can't be known  
    D. couldn't have known

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    科目： 来源：同步题 题型：单选题

    Li Ming ________ be in this city, for he has just gone to Shanghai.
    [     ]
    A．can't
    B．mustn't
    C．needn't
    D．shouldn't

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    科目： 来源：模拟题 题型：单选题

    — Do you know where David is? I couldn't find him anywhere.
    — Well. He _____ have gone far-he told me he would come back in 5 minutes.
    [     ]
    A. shouldn't
    B. mustn't
    C. can't
    D. wouldn't

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    科目： 来源：吉林省期中题 题型：单选题

    The World Wide Web is sometimes jokingly called the World Wide Wait because it ________
    be very slow.    
    [     ]
    A. should          
    B. must          
    C. will              
    D. can

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    科目： 来源：0120 模拟题 题型：单选题

    一 The woman biologist stayed in Africa studying wildlife for 13 years before she returned to her country.
    — Oh, dear! She _____ a lot of difficulties.
    [     ]
    A. may go through
    B. might go through
    C. must have gone through
    D. ought to have gone through

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