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    科目： 来源：不详 题型：单选题

    —Why do you look so worried?
    —My Macbook Pro broke down and my paper _____unfinished since.
    A．was leftB．has leftC．leftD．has been left

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    科目： 来源：不详 题型：单选题

    —That must have been a terrifying experience.
    —Yeah. I _____ in the damaged car, unable to move.
    A．was stuckB．have been stuckC．am stuckD．had been stuck

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    科目： 来源：不详 题型：单选题

    ---Do you know the timetable of the school bus?
    ---Sure, the first trip________ at 6:30 a.m. and usually continues until 4 p.m. on weekdays. 
    A．will startB．startsC．is startingD．started

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    科目： 来源：不详 题型：单选题

    The past two years ________ a sharp rise in oil price, which adds to the burden of auto transportation industry.   
    A．witnessed B．has witnessed C．is witnessing D．witnesses

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    科目： 来源：不详 题型：单选题

    Nowadays it is obvious that the Internet _______ our life rapidly.
    A．would changeB．changedC．had changedD．is changing

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    科目： 来源：不详 题型：单选题

    Ladies and gentlemen,please fasten your seat belts,the plane______.
    A．takes offB．is taking offC．is going to take off D．is to take off

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    科目： 来源：不详 题型：单选题

    The last thirty years _____ the greatest number of laws stopping our rights and progress,until today we have reached a stage ____ we have almost no rights at all.
    A．saw;whichB．have seen;thatC．saw;whereD．have seen;where

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    科目： 来源：不详 题型：单选题

    ---We’d like a double room with a view , please.
    ---I’m sorry, but all double rooms with a sea view _____________already.
    A．were reservedB．had been reserved
    C．have been reservedD．have reserved

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    科目： 来源：不详 题型：单选题

    Nowadays, we can obviously feel that the Net_______ our life rapidly.
    A．had changedB．changedC．is changingD．was changing

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    科目： 来源：不详 题型：单选题

    With the fast development of computer and Internet technologies, traditional printed books ______ by the growing popularity of online reading of e-books.
    A．are challengedB．have challenged
    C．are being challengedD．have been challenged

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