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。
It's nice to study at school with all my classmate again. This year our life has changed great since the epidemic (疫情). During the period, which impressed me most was that many medical workers in my hometown go to Wuhan in February without thinking twice. As an student, I will study hard and try to serve people on the future. Although it is becoming better, but there are still some possible risks. Therefore, good measures must taken throughout the country. We must avoid stay in groups and raise the awareness to protect us.
