◎ 题干
________ at the theatre, he found the ticket his friend gave him was left at home.
[     ]
A. To arrive  
B. On arriving
C. While arrived  
D. On arrived
◎ 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“________ at the theatre, he found the ticket his friend gave him was left at home. [ ]A. To arriveB. On arrivingC. While arrivedD. On arrived…”主要考查了你对  【介词和介词短语】【动名词】  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。