短文改错
假如英语课上老师要求同学们交换修改作文，请你修改你同桌写的作文。文中共有十处语言错误，每句中最多有两处，错误涉及一个单词的增加、删除或修改。
增加：在缺词处加上一个漏字符号（∧），并在其下面写上该加的词。
删除：把多余的词用斜线（\）划掉。
修改：在错的词下划一横线，并在该词下面写上修改后的词。
注意：1.每处错误及修改均仅限一词；
2.只允许修改十处，多者（从第11处起）不计分。
Many people which smoke say that smoking helps them to think better. But I strongly against smoking. First, smoking is harmfully to one’s health. People who smoke may die of different illnesses and disease. Second, smoking polluted the air. People find them impossible to work well in a room full of smoke. Third, smoking wastes of much money. It’s said that millions of dollars are spent treating diseases causing by smoking. To sum up, smoking does more harm than good. However, students should not pick up a habit of smoking.