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    26．Bob would have helped us yesterday.but he ． A. was busy B．is busy C had been busy D．will be busy 【查看更多】

     

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    Bob would have helped us yesterday，but he________．
    [     ]

    A．was busy  
    B．is busy
    C．had been busy  
    D．will be busy

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    Bob would have helped us yesterday，but he _______．

    A．was busy           B．is busy                 C．had been busy            D．will be busy

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    Bob would have helped us yesterday，but he 　　　　　　　 ．

    　 A. was busy　 B．is busy　 C had been busy　　 D．will be busy

     

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