◎ 题干
You can't have heard my words. You _____ at something outside.   
[     ]
A. are staring     
B. stared   
C. stare         
D. were staring
◎ 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“You can't have heard my words. You _____ at something outside. [ ]A. are staring B. stared C. stare D. were staring …”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。