第一篇，第一句smoking students 改成 students that smoking（抽烟的学生）比较好。英语中没有“smoking students ”这样的说法。后面都挺好的，没有什么错误。第二篇，第二句“there's 60%~70% of water in our body.”意思不通，最好改成“Water constitutes about 60%~70% of the weight of our body"水占我们身体重量的百分之60到70.
往后，If you don't drink any water for 5 days,you'll be dead.把for 5 days 改成withi...
