短文改错 （共10分;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短文。短文中共有10处错误，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：在缺词处加一个漏字符号（∧）, 并在此符号下面写出该加的词。
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。
Nowadays, there is a increasing number of people joining in the activities of volunteering．It’s well-known that volunteering jobs are making contributions to society with something in return．It’s as the Spirit of Lei Feng．However, knowing this, there are still many people would like to devote themselves to this trend．For instance, the 2008 Beijing Olympic Games had such many volunteers．They make lots of contributions to the success of the Olympics．Moreover, we can often see many students go to visit the old to take warm to them．Even though some people’s career is a volunteer．They are ready to helping others．Although the volunteers are much more common, we still need to thank they for devoting themselves to society．