◎ 题干
---________ he still _________ in his office?
---No. He __________ back home. 
A.Is; working; wentB.Has; worked; is going
C.Is; working; has goneD.Did; work; is going
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“ ---________ he still _________ in his office? ---No. He __________ back home.A.Is; working; wentB.Has; worked; is going C.Is; working; has goneD.Did; …”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。