◎ 题干
--- Did you notice him come into the hall?
--- Sorry, sir. I _______ with my friends online.
A.was chattingB.chatted C.would chat D.am chatting
◎ 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“--- Did you notice him come into the hall?--- Sorry, sir. I _______ with my friends online.A.was chattingB.chatted C.would chat D.am chatting…”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。