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    23．It took him to finish the work yesterday． A．three and a half hour B．three and half an hour C．three and a half hours D．three hours and half an hour 【查看更多】

     

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    It took him ____________ to finish the work yesterday．

    A．three and a half hour                B．three and half an hour

    C．three and a half hours               D．three hours and half an hour

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