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    科目： 来源：不详 题型：单选题

    —Why does the lake smell terrible?
    —Because large quantities of water______.          
    A．have pollutedB．is being polluted
    C．has been pollutedD．have been polluted

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    科目： 来源：不详 题型：单选题

    —I phoned you at 9 this morning but got no answer.
    —I am sorry. I _____ the bell. I _____ in the garden.
    A．didn’t have heard, must have beenB．didn’t have heard, must be
    C．didn’t hear, must have beenD．didn’t hear, must be

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    科目： 来源：不详 题型：单选题


    The boy was curious about how the waste paper was        into a model kite.
    A．improvedB．unitedC．transformedD．mixed

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    科目： 来源：不详 题型：单选题


    Hurry up! The shop ＿＿ in five minutes.
    A．closes B．is closing C．has closed D．is about to close

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    科目： 来源：不详 题型：单选题


    Customers are asked to make sure that they ____ the right change before leaving the shop.
    A．will giveB．have been givenC．have givenD．will be given

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    科目： 来源：不详 题型：单选题


    No decision __about any future appointment until all the candidates have been interviewed.
    A．will be madeB．is madeC．is being madeD．had been made

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    科目： 来源：不详 题型：单选题


    The police questioned William closely and he finally admitted ________the car.
    A．to stealB．having stolenC．to have stolen D．steal

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    科目： 来源：不详 题型：单选题


    一I’m sure  Andrew will win the first prize in the final．
    一I think so．He  for it for months．
    A．is preparingB．was preparing
    C．has been preparingD．had been preparing

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    科目： 来源：不详 题型：单选题


    My uncle _____ to see me. He'll be here soon.
    A．comes B．is coming C．had come D．came

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    科目： 来源：不详 题型：单选题


    Hurry up! Flight 4406        off at 18:40.
    A．takesB．tookC．will be takenD．has taken

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