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    科目： 来源：不详 题型：单选题

    All possible means ____ to prevent the air pollution, but the sky is still not clear.
    A．is usedB．has been usedC．are useD．have been used

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    科目： 来源：不详 题型：单选题

    Look at the timetable. Hurry up! Flight 4026 ____ off at 18:20.
    A．will be takenB．tookC．takesD．has taken

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    科目： 来源：不详 题型：单选题

    I _____ in London for many years, but I’ve never regretted my final decision to move back to China.
    A．have livedB．was livingC．livedD．had lived

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    科目： 来源：不详 题型：单选题

    Father ____ for London on business upon my arrival, so I didn’t see him.
    A．has leftB．leftC．was leavingD．had left

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    科目： 来源：不详 题型：单选题

    -- So what is the procedure?
    --- All the applicants ______ before a final decision is made by the authority. 
    A．interviewedB．are interviewing
    C．are interviewedD．are being interviewed

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    科目： 来源：不详 题型：单选题

    —I can’t manage this Sunday. Another time , but not Sunday.
    —Why_______ me earlier ? I’ve been looking forward to it.
    A．hadn’t you toldB．don’t you tellC．not to tellD．didn’t you tell

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    科目： 来源：不详 题型：单选题

    Since Jack was laid off from his job three months ago, he       a new one, but without luck.
    A．1ooked forB．had looked forC．is looking forD．has been loking for

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    科目： 来源：不详 题型：单选题

    An increasing number of students, year by year, across China ____ hard to realize their dream of studying abroad.
    A．is tryingB．are tryingC．will tryD．have tried

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    科目： 来源：不详 题型：单选题

    — Beijing is well worth visiting. I _____ there with my parents during the holidays.
    — I agree. I have been there twice.
    A．wentB．have goneC．have beenD．would go

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    科目： 来源：不详 题型：单选题

    The English teacher   her students how to improve their comprehension skill since last week.
    A．has toldB．is tellingC．has been tellingD．will have told

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