◎ 题干
The telephone _____, but by the time I got indoors, it stopped.

A. had rung
B. was ringing
C. rings
D. has rung
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“The telephone _____, but by the time I got indoors, it stopped. [ ]A. had rung B. was ringing C. rings D. has rung …”主要考查了你对  【过去进行时】  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。