◎ 题干
Mother wanted to be a good provider, a role she _____ since her marriage to Father.

A. shoulders
B. shouldered
C. is shouldering
D. has been shouldering
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“Mother wanted to be a good provider, a role she _____ since her marriage to Father. [ ]A. shoulders B. shouldered C. is shouldering D. has been shouldering …”主要考查了你对  【现在完成进行时】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。