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    科目： 来源：不详 题型：单选题

            you make a promise,you should keep it.
    A．UnlessB．ThoughC．OnceD．Even if

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    科目： 来源：不详 题型：单选题

    The reason ________ he explained was________ he was ill and unable to go to school.
    A．why; thatB．why; becauseC．which; becauseD．which; that

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    科目： 来源：不详 题型：单选题

    He’s got himself into a dangerous situation ________ he is likely to lose control over the plane.
    A. where            B. which           C. while                D why

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    科目： 来源：不详 题型：单选题

    The old man was telling a funny story, surrounded by many kids, _________ with fascination.
    A．all of whom listenedB．all of whom listening
    C．all of them listenedD．all of them were listening

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    科目： 来源：不详 题型：单选题

    _____ you make a promise, you should keep it.
    A．ThoughB．UnlessC．Now thatD．Even if

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    科目： 来源：不详 题型：单选题

    _______these coins are of different shapes, sizes and colors, they all date back to a long, long time ago.
    A．SinceB．UnlessC．OnceD．While

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    科目： 来源：不详 题型：单选题

    One more month, _______ the grapes in the yard will be ripe.
    A．orB．otherwiseC．butD．and

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    科目： 来源：不详 题型：单选题

    Jack wasn’t saying anything, but the teacher smiled at him _______he had done something very clever.
    A．as ifB．now thatC．whileD．though

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    科目： 来源：不详 题型：单选题

    ________ you are busy, let us help you finish the project.
    A．AlthoughB．Now thatC．As soon asD．Even if

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    科目： 来源：不详 题型：单选题

    Is this the reason____ at the meeting for his carelessness in his work?
    A．he explainedB．what he explained
    C．how he explainedD．why he explained

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