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    -What's our homework for today, Peter? -Oh, sorry I . A. hadn't concentrated B. wouldn't concentrate C. haven't been concentrating D. wasn't concentrating 【查看更多】

     

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    － What’s our homework for today, peter?

    － Oh, sorry I ________．

    [　　]

    A．hadn’t concentrated

    B．wouldn’t concentrate

    C．haven’t been concentrating

    D．wasn’t concentrating

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    －What's our homework for today, Peter?

    －Oh, sorry．I ________．

    [　　]
    A．

    hadn't concentrated

    B．

    wouldn't concentrated

    C．

    haven't been concentrated

    D．

    wasn't concentrating

    查看答案和解析>>


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