◎ 题干
—I called you this morning, but nobody answered it.
—Oh, we _____ some running in the park.
[     ]
A. are doing
B. were doing
C. have done
D. did
◎ 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“—I called you this morning, but nobody answered it.—Oh, we _____ some running in the park.[ ]A. are doingB. were doingC. have doneD. did…”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。