children go to school when they are eight years old in china.同义句
题目
children go to school when they are eight years old in china.同义句
children go to school （ ） eight in china.
答案
children go to school （ at the age of ） eight in china.
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我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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