◎ 题干
— "Amy,  I called you yesterday evening, but nobody answered the phone.
—Oh, I _________a walk with my mother at  that time.  
 [     ]

A. take                    
B. took  
C. am taking              
D. was taking

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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“—"Amy,I called you yesterday evening, but nobody answered the phone. —Oh, I _________a walk with my mother atthat time.[ ]A. take B. took C. am takingD. w…”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。