◎ 题干
I'm sorry I didn't hear what you said. I _____ the picture.
[     ]
A. am looking at
C. has looked at
B. looked at
D. was looking at
◎ 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“I'm sorry I didn't hear what you said. I _____ the picture. [ ]A. am looking at C. has looked atB. looked at D. was looking at …”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。