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    科目： 来源：不详 题型：单选题

    —Hi, Susan, where were you at lunch time？I ________ a seat for you in the coffee shop.
    —Oh, sorry to miss you.My political science class ran longer than usual.
    A．am savingB．was saving
    C．had savedD．have saved

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    科目： 来源：不详 题型：单选题

    His sister left home in 1998，and ________ since.
    A．had not been heard ofB．has not been heard of
    C．had not heard ofD．has not heard of

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    科目： 来源：不详 题型：单选题

    —Why does the lake smell terrible?
    —Because large quantities of water ________.
    A．have pollutedB．is being polluted
    C．has been pollutedD．have been polluted

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    科目： 来源：不详 题型：单选题

    The water ________ cool when I jumped into the pool for morning exercise.
    A．was feltB．is feltC．feltD．feels

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    科目： 来源：不详 题型：单选题

    —I'd like a pen which ________ well.
    —Will this one ________？
    A．writes；doB．writes；work
    C．is written；doD．is written；work

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    科目： 来源：不详 题型：单选题

    All the scientific evidence ________ that increasing use of chemicals in farming ________ damaging our health.(2012·湖南)
    A．show；areB．shows；are
    C．show；isD．shows；is

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    科目： 来源：不详 题型：单选题

    Walmart，which is one of the largest American supermarket chains，________ some of its stores open 24 hours on Mondays through Saturdays.(2012·安徽)
    A．keepsB．keepC．have keptD．had kept

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    科目： 来源：不详 题型：单选题

    The basketball coach，as well as his team，________ interviewed shortly after the match for their outstanding performance.(2012·陕西)
    A．wereB．wasC．isD．are

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    科目： 来源：不详 题型：单选题

    (2011·湖南)One－third of the country ________ covered with trees and the majority of the citizens ________ black people.
    A．is；areB．is；isC．are；areD．are；is

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    科目： 来源：不详 题型：单选题

    ________ a certain doubt among the people as to the practical value of the project.
    A．It hasB．They have
    C．It remainsD．There remains

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