练习册

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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 答案A [解析]考查时态.根据前半句的虚拟结构可知该句描述过去的事实.所以用一般过去时.句意为:“Bob昨天本可以帮助我们的.但他很忙. 【查看更多】

     

    题目列表(包括答案和解析)

    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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