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    科目： 来源：不详 题型：单选题

    It is almost five years ______ we saw each other last time.
    A．beforeB．sinceC．thatD．when

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    科目： 来源：不详 题型：单选题

    Only then _____________ the importance of my teacher’s talk with me.
    A．realized IB．I realizedC．did I realizeD．I did realize

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    科目： 来源：不详 题型：单选题

    There seemed no end to their troubles; nowhere _________ upon a path.
    A．they could comeB．could come they
    C．come they couldD．could they come

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    科目： 来源：不详 题型：单选题

    At no time, as we know, _______ forget that solving Taiwan Issue is entirely internal Chinese affair.
    A．we canB．we couldC．can weD．could we

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    科目： 来源：不详 题型：单选题

    Only when your identity has been checked ________.
    A．you are allowed toB．you will be allowed in
    C．will you allow inD．will you be allowed in

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    科目： 来源：不详 题型：单选题

    –It is said that Bob will drop out of school because his family cannot afford the school fee.
    – _____, let’s give him a hand.
    A．If soB．If onlyC．Where necessaryD．Where possible

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    科目： 来源：不详 题型：单选题

    I failed in the job interview and only then _____ the importance of learning English well.
    A．I realizedB．I had realizedC．did I realizeD．had I realized

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    科目： 来源：不详 题型：单选题

    －How was your final exam, Tom?
    －I’m sorry, dad. I failed and only then       the importance of studies.
    A．I realized B．I had realized
    C．had I realized D．did I realize

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    科目： 来源：不详 题型：单选题

         you eat the correct foods       be able to keep fit and stay healthy .
    A．Only if , will youB．Only if , you will
    C．If only , will youD．Unless , you will

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    科目： 来源：不详 题型：单选题

    Only after they had discussed the matter for several hours       a decision .
    A．they reachedB．did they reachC．they reachD．do they reach

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