◎ 题干
When I finished_______ the letter, it_______9 o'clock.       
[     ]
A. to write; is    
B. writing; was    
C. write; is        
D. wrote; was
 
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“When I finished_______ the letter, it_______9 o'clock.[ ]A. to write; is B. writing; was C. write; is D. wrote; was…”主要考查了你对  【动名词】【一般过去时】  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。