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    科目： 来源：不详 题型：单选题

    I really appreciate ____ to help me with my maths, but I’m afraid that I have no time this week．
    A．you to offerB．it you offer
    C．your offeringD．this you are offering

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    科目： 来源：不详 题型：单选题

    ________ a precious diamond necklace for his wife, Martin could hardly afford a tie for himself．
    A．Having boughtB．Buying
    C．Being boughtD．To buy

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    科目： 来源：不详 题型：单选题

    ____the problem of land erosion(侵蚀) getting more serious, the government is searching for a way to deal with it.
    A．AsB．WhenC．WithD．If

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    科目： 来源：不详 题型：单选题

    _______ the necklace borrowed from her friends made her_____ completely.
    A．Losing; upsetB．To lose; to be upsetC．Losing; upsettingD．lost; upset

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    科目： 来源：不详 题型：单选题

    _________ in Current Biology, the finding suggests that female birds seek mates with superior singing skills.
    A．To publishB．Published
    C．Having publishedD．To be published

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    科目： 来源：不详 题型：单选题

    The children went home from the grammar school, their lessons ______ for the day.
    A．finishing B．finishedC．had finishedD．had been finished

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    科目： 来源：不详 题型：单选题

    ________ in the cage for half a day, the bird became hungry.
    A．Being keptB．Having keptC．Having been keptD．Have been kept

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    科目： 来源：不详 题型：单选题

    _______ good and sweet, this kind of apple was soon sold out in the market.
    A．TastedB．TastingC．Having been tastedD．Being tasted

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    科目： 来源：不详 题型：单选题

    _______ of the heavy burden of homework, the children rushed out of the classroom and enjoyed themselves.
    A．To be freeB．FreeingC．To freeD．Freed

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    科目： 来源：不详 题型：单选题

    They covered the body of the little hero with a flag, leaving his face_________.
    A．to exposeB．exposingC．exposedD．expose

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