◎ 题干
You'd better keep us ______of any change of the address as soon as possible.  
[     ]
A. informed      
B. informing      
C. inform      
D. toinform
◎ 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“You'd better keep us ______of any change of the address as soon as possible. [ ]A. informed B. informing C. inform D. toinform…”主要考查了你对  【过去分词】  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。