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    Dr. Bethune worked hard as if he . A. never had felt tired B. had never felt tired C. never felt tired D. was tired never 【查看更多】

     

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    Dr. Bethune worked hard as if he ___.
    A. never had felt tired B. had never felt tired

    C. never felt tired 　　 D. was tired never

     

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    Dr. Bethune worked hard as if he ___.

     

    A. never had felt tired B. had never felt tired

     

    C. never felt tired D. was tired never

     

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