i can't understand-------- at the poor little girl

问题描述：

i can't understand________ at the poor little girl
A they laugh
B their laughing
C them to laugh
D them why laugh
1个回答 分类：英语 2014-12-12

问题解答：

我来补答
understand sb.to do sth.理解某人做某事.
 
 
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