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    科目： 来源：不详 题型：单选题

    Good news! The price of all those second-hand goods is ________ before.
    A．30% as lower asB．30% lower than
    C．lower 30% thanD．as 30% low as

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    科目： 来源：不详 题型：单选题

    -You look upset.
    -Yes, this is the first time I________ form home.
    A．leaveB．leftC．have been awayD．is away

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    科目： 来源：不详 题型：单选题

    It was very important for us  ________ happy every day.
    A．to stayB．stay C．stayedD．staying

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    科目： 来源：不详 题型：单选题

    It is no use _______ about the coming exam.
    A. worry   B worrying   C  worried   D  to worry

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    科目： 来源：不详 题型：单选题

    —Oh, dear! I forgot the air tickets.
    　  —You ______ something.
    　 
    A．have leftB．are always leaving　C．are leavingD．always left

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    科目： 来源：不详 题型：单选题

    People in the west make_____a rule to buy Christmas presents for their relatives and friends.
    A．thatB．the thingC．thisD．it

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    科目： 来源：不详 题型：单选题

    Scientists say it may be five or six years_______it is possible to test this medicine on human patients.
    A．whenB．afterC．beforeD．since

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    科目： 来源：不详 题型：单选题

    It was three o’clock _______ he came back from work.
    A．sinceB．whenC．thatD．before

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    科目： 来源：不详 题型：单选题

    ________ has already been pointed out, only by correcting mistakes can you make progress.
    A．ItB．AsC． ThatD．What

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    科目： 来源：不详 题型：单选题

    —Are you firmly against any independence move by Taiwan?
    —Of course. That’s ________ our basic interest lies.
    A．whyB．whenC．whereD．what

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