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    科目： 来源：不详 题型：单选题


    Every possible means _______ been taken to prevent the river _________.
    A．have; pollutingB．has; polluted
    C．has; from being pollutedD．have; being polluted

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    科目： 来源：不详 题型：单选题


    Where she will go and when she will leave _____ what I want to know.
    A．isB．wereC．wasD．are

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    科目： 来源：不详 题型：单选题


    When she realized that the bike______towards her, she quickly turned aside.
    A．ranB．was runningC．had runD．has run

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    科目： 来源：不详 题型：单选题


    －Hi, I didn't know you had come back! Have you finished your teaching in America?
    －Yes. I______Chinese there for more than two years.
    A．have been teachingB．was teachingC．taughtD．had taught

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    科目： 来源：不详 题型：单选题


    -Did you attend Mary and Tom’s wedding ceremony?
    -Yes，but as you know，they________each other no more than 3 months．
    A．knewB．had knownC．have knownD．have been knowr

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    科目： 来源：不详 题型：单选题


    -I give up．It’s too hard．
    -Really? I______you could make it through．
    A．thinkB．thoughtC．have thoughtD．am thinking

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    科目： 来源：不详 题型：单选题


    It was a pity that he __________ blind, but to the joy of his family, his dream of becoming a musician __________ true at last.
    A．came; cameB．went; wentC．came; wentD．went; came

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    科目： 来源：不详 题型：单选题


    Thanks to the policy, birth rates in the country_____ 2 percent annually for the past five years.
    A．have been risen
    B．have been rising
    C．are rising
    D．are risen

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    科目： 来源：不详 题型：单选题

    Have you prepared for the sports meeting which ___soon?
    A．has taken place B．will be taken place
    C．is to take place D．is to be taken place

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    科目： 来源：不详 题型：单选题


    Your pen________smoothly. Where did you buy it?
    A．writesB．is writtenC．wroteD．was written

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