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    Both of his parents died of illness so he support his family at the age of 14 A. must B. should C. could D. had to 【查看更多】

     

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    Both of his parents died of illness so he             support his family at the age of 14.
    [     ]
    A. must
    B. should
    C. could
    D. had to

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    Both of his parents died of illness so he ______ support his family at the age of 14.
    [     ]
    A. must
    B. should
    C. could
    D. had to

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