1 . 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处语言错误，每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号（∧），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仅限一词；
2. 只允许修改10处，多者（从第11处起）不计分。

Festivals, which has a wide range of origins, are celebrated all over the world. Of all the tradition festivals, the harvest festival can be found in almost every culture.

People celebrate to show they are grateful to the year’s supply of food. Customs play a significant role in festivals, but some traditions may fade away while others may established. In order to avoiding air pollution, many big cities have given up the custom of lighting firecrackers. With businesses taken advantage of celebrations, festivals are becoming increasing commercial. Online shopping websites and social media app have made it much easy for the public to spend more on their loved ones.

Festivals, reflecting on people’s wishes, are an important part of society.