◎ 题干
The manager promised to keep us _____ of how our business was going on.
  1. informed  B. informing  C. to inform  D. having informed
◎ 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“The manager promised to keep us _____ of how our business was going on.informed B. informing C. to inform D. havinginformed…”主要考查了你对  【动词短语】【动词】  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。