◎ 题干
The greatest pleasure I know is to do a good action quietly, and to have it _____ by accident.  
[      ]
A. find out      
B. finding out        
C. found out        
D. be found out
◎ 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“The greatest pleasure I know is to do a good action quietly, and to have it _____ by accident.[ ]A. find out B. finding out C. found out D. be found out…”主要考查了你对  【过去分词】  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。