Some students went out of the cla room while talking and laughing. Two girls were singing a song on their seats.
一些学生说着、笑着出了教室，两个女孩坐在座位上唱歌。
Some students went out of the cla room while talking and laughing. Two girls were singing a song on their seats.
一些学生说着、笑着出了教室，两个女孩坐在座世博会英语四级作文位上唱歌。
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