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    科目： 来源：不详 题型：单选题

    ------- What is the price of petrol these days
    -------Oh, it ______ sharply since last month.
    A．is raisedB．has risenC．has arisenD．is increased

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    科目： 来源：不详 题型：单选题

    When he  _______ the door, he found his keys were nowhere.            
    A．would open B．opened C．had opened D．was to open

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    科目： 来源：不详 题型：单选题

    If you ________ Beijing Duck，I'd like to treat you to a meal at a famous duck restaurant．
    A．didn't tryB．don't tryC．haven't triedD．hadn't tried

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    科目： 来源：不详 题型：单选题


    They said that they ______ a wonderful time in Beijing and they hoped to be there again.
    A．hadB．would have
    C．would have hadD．could have

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    科目： 来源：不详 题型：单选题


    .--- Haven't I told you that I like the beef well done?
    ---Yes, but I _____ it longer than I usually do.
    A．was cookingB．will cookC．cookedD．had cooked

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    科目： 来源：不详 题型：单选题

    Although the causes of cancer_____, we do not yet have any practical way to prevent it.
    A．are being uncoveredB．have been uncoveringC．are uncoveringD．have uncovered

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    科目： 来源：不详 题型：单选题

    —I’ve got to go now.
    —Must you ?I ______you could stay for dinner with us.
    A．thinkB．thought
    C．have thoughtD．am thinking

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    科目： 来源：不详 题型：单选题

    ——— Ring me at six tomorrow morning， will you?
    ——— Why that early?  I ______ .
    A．will be sleepingB．have sleptC．have been sleepingD．will sleep

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    科目： 来源：不详 题型：单选题


    —He _______ to the meeting. Have you informed him of it?
    —Sorry. I ________to.
    A．hasn’t come; am going
    B．didn’t come; have forgotten
    C．hasn’t come; forgot
    D．doesn’t come; will have

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    科目： 来源：不详 题型：单选题


    Jane was disappointed that most of the guests   ______when she _______ at the party.
    A．left; had arrivedB．left; arrived
    C．had left; had arrivedD．had left; arrived

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