Therefore, the best way to have a nice atmosphere to take class is to switch the mobile phone off and enjoy listening to the teacher.
因此，为了能有一个良好的课堂环境，请把手机关掉，认真地听老师讲课。
Perhaps you could take class to learn how to make speeches and presentations.
或许你应该参加一个学习班，学习如何演讲和陈述。
Perhaps you could take class to learn how to make speeches and presentations.
或许你应该参加一个学习班，学习如何演讲和陈述。
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