一篇关于“志愿者”的英语作文要求：假如你是张亚,参加了学校上周六“环保俱乐部”组织的志愿者活动内容：张贴海报,分发广告,清扫街道,打扫公园等,并谈谈看法

In modern societies, it is increasingly popular that young people volunteer on weekends in the local community service center to help the people in need. If all the youngsters do it in a regular way, the benefits are obvious to both the community and these young adults.
It can be argued that the advantages of doing unpaid community service are enormous. Indeed, when an old person feels sick, the volunteers could offer first aid before the doctor or the ambulance arrives. Moreover, as far as the young people are concerned, they could develop the sense of responsibility, independence as well as interpersonal skills in the process of helping others in the neighborhood. In this way, people may live in harmony in the community.
College students’ participating in teaching children in rural areas, in helping the old in geracomium and in other activities will not only take care of those people in need of help, but also bring hope and warmth to them. Besides, large-scale volunteer activities, such as the Olympic Games, can exercise the volunteers themselves, and what’s more, can show present university student's elegant demeanor.
Be a university student, I will keep it in my heart that I'm a volunteer and fill myself with a strong will of devotion.