◎ 题干
_____ the address, Tom sent the email to his teacher.
A. Having checked
B. Checked
C. Being checked
D. To check
◎ 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“_____ the address, Tom sent the email to his teacher. [ ]A. Having checked B. Checked C. Being checked D. To check …”主要考查了你对  【现在分词的完成式】  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。