◎ 题干
She ___________ to Shanghai on business.
A. have been        B. has gone        C. has been
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“She ___________ to Shanghai on business. A. have been B. has gone C. has been…”主要考查了你对  【一般现在时】【过去进行时】【过去完成进行时】  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。