◎ 题干
-Sir,can I smoke here?    
-At no time _____ in the meeting-room.    
[     ]
A. is smoking permitted                            
B. smoking is permitted    
C. smoking is it permitted                        
D. does smoking permit
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“-Sir,can I smoke here? -At no time _____ in the meeting-room. [ ]A. is smoking permittedB. smoking is permitted C. smoking is it permitted D. does smoking …”主要考查了你对  【一般现在时的被动语态】【部分倒装】  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。