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    科目： 来源：不详 题型：单选题

    Only when the European countries' financial system broke down _____to take measures to deal with those problems．
    A．did they decideB．they decidedC．they had decidedD．had they decided

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    科目： 来源：不详 题型：单选题

    Up went the price and _______.
    A．the living standard came downB．came down the living standard
    C．down came the living standardD．down the living stand came

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    科目： 来源：不详 题型：单选题

    Not until I ________ to work ____ how much time I had wasted.
    A．did begin; didn’t I realizeB．began; I realized
    C．did begin; I realizedD．began; did I realize

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    科目： 来源：不详 题型：单选题

    The experiment shows that proper amounts of exercise ,if _______regularly, can improve our health.
    A．being carried out B．carrying outC．carried outD．to carry out

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    科目： 来源：不详 题型：单选题

    Every evening after dinner, if not            from work, I will spend some time walking my dog.   
    A．being tiredB．tiringC．tiredD．to be tired

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    科目： 来源：不详 题型：单选题

    He failed the midterm examination and only then ________how much time he had wasted.
    A．he realizedB．did he realize
    C．he had realizedD．had he realized

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    科目： 来源：不详 题型：单选题

    No sooner _________ to school _________ the bell for the first class began this morning.
    A．had I got; when B．I had got; than
    C．had I got; thanD．did I get; when

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    科目： 来源：不详 题型：单选题

    Only when he met the girl his aunt introduced to him ____ that he had seen her before.
    A．he realizedB．he did realizeC．realized he D．did he realize

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    科目： 来源：不详 题型：单选题

    I failed in the spoken examination last term and only then _______ the importance of practicing speaking English.
    A．I had realizedB．had I realizedC．I did realizeD．did I realize

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    科目： 来源：不详 题型：单选题

    In no country other than Britain, it has been said, ________ experience four seasons in the course of a single day.
    A．people can B．you canC．can itD．can one

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