◎ 题干
—Did you meet the professor at the airport?
—No,he ____ by the time I ____ there.
A.had left;gotB.has left;reached
C.was leaving;gotD.left;had got
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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 meet the professor at the airport?—No,he ____ by the time I ____ there.A.had left;gotB.has left;reachedC.was leaving;gotD.left;had got…”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。