Physical education, and class activities should be prepared before, the movement should pay attention to don't a violent collision, so as not to hurt or hurt.
上体育课和课处活动前要作好准备活动，运动时要注意不要剧烈地碰撞，以免撞伤或摔伤。
The before-class activities are the most important part of the English class.
课前活动是课堂教学部分不可或缺的重要前奏。
The before-class activities are the most important part of the English class.
课前活动是课堂教学部分不可或缺的重要前奏。
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