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来源：雅诚德英语网
According to the passage, Guo's students can keep their homework on WeChat, can't they?
根据文章，郭的学生可以把作业存在微信上，是吗？
According to the passage, Guo's students can keep their homework on WeChat, can't they?
根据文章，郭的学生可以把作业存在微信上，是吗？