第一节  短文改错（共10小题；每小题1分，满分10分）
假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文。文中共有10处错误，每句中最多有两处，错误仅涉及一个单词的增加，删除或修改。
   增加： 在缺词处加一个漏词符号（∧）,并在其下面写出该加的词。
删除：把多余的词用斜线（\）划掉。
修改： 在错的词下划一横线，并在该词下面写出修改后的词。
注意：1. 每处错误及其修改均限一词。
2. 只允许修改10处，多者（从第11处起）不计分。
   Last winter, the smog occurred a lot of time. It brought much inconvenience to our daily life or did great harm to our health. Many traffic accidents had happened just because of the heavy smog weather. In addition, quite a lot of flights had to put off and a great number of people stayed at home to keep them away from the harmful air. Some people suffered of bad coughs, sore throats and other serious diseases cause by the smog. I think whomever lives on the earth should try to play the part in the environmental protection. I support the idea that we can try to drive more and buy environmentally friendly products to improve the air quality.