◎ 题干
— Hello, Sandy. This is Jack. What are you doing?
— I’m watching a match. It started at 7 p.m. and _____ on for another half an hour.
A.has beenB.wasC.had beenD.will be
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“— Hello, Sandy. This is Jack. What are you doing?— I’m watching a match. It started at 7 p.m. and _____ on for another half an hour.A.has beenB.wasC.had …”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。