◎ 题干
My parents told me ____ no circumstances should I open the door for a stranger when I
was alone at home.
[     ]
A. on            
B. in              
C. at                    
D. of
◎ 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“My parents told me ____ no circumstances should I open the door for a stranger when Iwas alone at home.[ ]A. onB. in C. atD. of…”主要考查了你对  【介词和介词短语】  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。