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    科目： 来源：专项题 题型：单选题

    The time is not far away _____ modern communications will become widespread in China's vast countryside.
    [     ]
    A. when
    B. as
    C. until
    D. before

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    科目： 来源：专项题 题型：单选题

    — The MP3 cost me about 2,000 yuan. 
    — Well, it was crazy of you to spend so much money _____ you could buy a cheaper one.
    [     ]
    A. when
    B. unless
    C. if
    D. because

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    科目： 来源：专项题 题型：单选题

    _____ everybody knows about it, I don't want to talk any more.
    [     ]
    A. For
    B. Even
    C. Since
    D. However

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    科目： 来源：专项题 题型：单选题

    — How long do you think it will be _____ the Stock Market returns to normal?
    — At least one year, I guess.
    [     ]
    A. when
    B. before
    C. until
    D. that

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    科目： 来源：专项题 题型：单选题

    — Our journey cost a lot of money.
    — Really? Well, that doesn't matter _____ you enjoyed yourselves.

    [     ]
    A. as far as
    B. unless
    C. as long as
    D. in case

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    科目： 来源：专项题 题型：单选题

    Let's put off the picnic until next week _____ the weather may be better.
    [     ]
    A. since
    B. if
    C. as
    D. when

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    科目： 来源：专项题 题型：单选题

    Perhaps the day will come _____ people will be able to breathe clean air in cities.
    [     ]
    A. when
    B. while
    C. as
    D. since

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    科目： 来源：专项题 题型：单选题

    — How long do you think it is _____ he took up the job? 
    — Half a year at least.
    [     ]
    A. when
    B. before
    C. that
    D. since

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    科目： 来源：专项题 题型：单选题

    Double ovens are a good idea, especially _____ you are cooking several meals at a time.
    [     ]
    A. though
    B. if
    C. that
    D. unless

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    科目： 来源：专项题 题型：单选题

    — How long have you ______ this book?
    — _____ 1994.
    [     ]
    A. had; Since
    B. bought; Since
    C. borrow; In
    D. kept; In

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