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    科目： 来源：不详 题型：单选题

     
    5. He will never _______ though every means ________ tried already.
    A．lose heart; has beenB．lose heart; have been
    C．lose his heart; wasD．lose his heart; had

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    科目： 来源：不详 题型：单选题

    In the last six to nine months，teens in the US        to text messaging in numbers twice that in Europe and Asia．
    A．tookB．have takenC．had taken D．would take

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    科目： 来源：不详 题型：单选题


    26. — Why is little Jimmy so naughty today?                        
    — He is bored, so he _____ a little silly.                         
    A．will beB．is beingC．had beenD．would be

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    科目： 来源：不详 题型：单选题


    32. Tens of thousands of trees _____ in the area in the past few years.
    A．have been plantedB．were plantedC．have plantedD．had planted

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    科目： 来源：不详 题型：单选题

     
    28. The water will be further polluted unless some measures ______.
    A．will be takenB．are takenC．were takenD．had been taken

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    科目： 来源：不详 题型：单选题

        
    24. —Hi, Alice, you look tired.
    —I am tired. I__________ the living room all day.
    A．paintedB．had painted
    C．have been paintingD．have painted

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    科目： 来源：不详 题型：单选题

    ―Look! What a mistake! Why?
    ―Sorry, I _________ on it.
    A．don’t concentrateB．hadn’t concentrated
    C．haven’t been concentratingD．wasn’t concentrating

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    科目： 来源：不详 题型：单选题

     
    25. ―Look! What a mistake! Why?
    ―Sorry, I _________ on it.
    A．don’t concentrateB．hadn’t concentrated
    C．haven’t been concentratingD．wasn’t concentrating

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    科目： 来源：不详 题型：单选题

    Our food_____out, why not go to the market and buy some?
    A．runsB．ranC．is runningD．has been run

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    科目： 来源：不详 题型：单选题


    24. —Mr Smith, ______ John ______ this week? A friend of his is coming to see him this afternoon.
    —No. He is on holiday.
    A．has; workedB．is; workingC．did; workD．does; work

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