◎ 题干
—What's up? You didn't pick up the phone just now.
—I'm sorry that I ________    dancing with music on, but it's done now.
A.practisedB.was practising
C.am practisingD.have practiced
◎ 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“—What's up? You didn't pick up the phone just now.—I'm sorry that I ________dancing with music on, but it's done now.A.practisedB.was practisingC.am pract…”主要考查了你对  【过去进行时】【过去进行时的被动语态】  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。