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    Is the light ? 【查看更多】

     

    题目列表(包括答案和解析)

    --Is the light __________ in the room?      
    --No,  it's off.      
    [     ]
    A．in                
    B．at      
    C．on                
    D．down

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    The light is on in Mr. Green’s room. He _______ be at home.
    A．mustB．canC．mustn’tD．can’t

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    The light bulb ______ by Edison in the middle of the 1780s.

    A．is inventedB．was inventedC．inventedD．invent

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    The light ____  red. You ____  cross the road.

    A．are, canB．is, cannot
    C．are, can notD．is, must

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    ---The light in the room is still on. Do you know_______?
    ---In order to prepare for the coming exam.

    A．if he works hardB．why he stays up late
    C．why is he so busyD．when he will stop working

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