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As you know, it is our duty to _________ my younger sisters

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As you know, it is our duty to _________ my younger sisters from being hurt when they are in trouble.
A.prevent B.save C.stop D.protect
D




it is our duty to do,it是形式主语,to do sth是真正的主语;save节省,挽救; prevent…from…/ stop…from…阻止某人做某事;protect…from…保护某人/某物不受伤害。这里hurt的逻辑主语是my younger sisters,它们之间是被动关系,故这里用的是being hurt它是动名词的被动语态。根据句意故选D。

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