◎ 题干
—What were you doing when I called you at 8 p.m. yesterday?  
—I      the piano at that time.
A.playB.is playingC.playedD.was playing
◎ 答案
查看答案
◎ 解析
查看解析
◎ 知识点
    根据n多题专家分析,试题“—What were you doing when I called you at 8 p.m. yesterday?—I the piano at that time.A.playB.is playingC.playedD.was playing…”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。