評論
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講解文本：
play favorites 偏心，偏愛
Teachers are not supposed to play favorites. That's unfair to other students.
老師不應該有偏心，這樣對其他學生不公平。
It's ok to have a good friend in the office, but don't play favorites.
在辦公室有一個朋友是好事，但也不要太偏心了。
瘋狂練習吧！
喜歡yuyu老師就加微信hahahchicai
