◎ 题干
---Linda, I called you this morning, but nobody answered the phone.
--- I am sorry. I         football with my friends then.
A.playB.played
C.am playingD.was playing
◎ 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“---Linda, I called you this morning, but nobody answered the phone.--- I am sorry. I football with my friends then.A.playB.playedC.am playingD.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。