Class activity can take me away from the heavy study, I can take in the freshair.
班级活动能让我脱离沉重的学习，呼吸新鲜的空气。
2
What's more, the air in the morning is really fresh and clean, so I can keep my mind clear and sound in the class.
更重要的是，早晨的空气干净清新，这样我就能在课堂上保持一颗清醒的头脑了。
3
Boys in my class were digging holes in he classroom to let freshair in. Then they tried to dig a passage with their bare hands, and finally, I found a way to escape.