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。
Nowadays, more and more people have taken part in voluntary work, that is a sign of social progress. There are many different kinds of voluntary activity students can participate. For instance, they can work as volunteers in a library or a bookstore if they were fond of reading or they can go to the nursing home to help the elderly. As the saying goes, the fragrance always stay in the hand that gives the rose. Being volunteers is of great benefit to students, give them a sense of an achievement when they are helping others. By doing voluntary work, students realize the importance of social work and enhance their social responsibility. Therefore, not all the voluntary activities are suitable for students. It is to say, the activities should be safe and easily to conduct.
