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    -Mum, I have got a headache. -You’d better go out and take a walk. You in front of the TV too long. A. have been sitting B. are sitting C. sit D. sat 【查看更多】

     

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    —Mum, I have got a headache.
    — You’d better go out and take a walk. You       in front of the TV too long. 

    [     ]
    A. have been sitting
    B. are sitting
    C. sit
    D. sat

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