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    -Peter, could you come and help me in the kitchen, please? - Sorry, Mum. I Lily with her English. A. help B. am helping C. have helped D. helped 【查看更多】

     

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    — Peter, could you come and help me in the kitchen, please?    
    — Sorry, Mum. I _____ Lily with her English. 
    [     ]
    A. help
    B. helped
    C. have helped
    D. am helping

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