◎ 题干
-----What are Joe and Jeff doing?
-----Joe is _______ a film and Jeff is ______.
A.seeing , runingB.seeing , running C.sees, runsD.see, run
◎ 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 are Joe and Jeff doing? -----Joe is _______ a film and Jeff is ______.A.seeing , runingB.seeing , running C.sees, runsD.see, run…”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。