◎ 题干
After completing and signing it, please return the form to us in the envelope      ________.
[     ]
A. providing 
B. provided
C. having provided 
D. provide
◎ 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“After completing and signing it, please return the form to us in the envelope________.[ ]A. providingB. providedC. having providedD. provide…”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。