◎ 题干
-- Shirley, what were you doing at three o’clock yesterday?
-- I was sitting by the window, __________ to the music.
A.listenB.listening
C.listenedD.to listen
◎ 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“-- Shirley, what were you doing at three o’clock yesterday? -- I was sitting by the window, __________ to the music.A.listenB.listeningC.listenedD.to listen…”主要考查了你对  【不定式】【分词】【动名词】  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。