◎ 题干
-- The traffic is busy in Harbin.
--It’s really so. When the subway      , the traffic will become better.
A finishes         B will finish        C is finished
◎ 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“-- The traffic is busy in Harbin.--It’s really so. When the subway , the traffic will become better.A finishes B will finish C is finished…”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。