英语日记：参加义务劳动 voluntary labour
你于"五一"前夕 ----4 月 28 日上午九点钟，与全班同学一起到学校附近的公园参加一次公益劳动（ voluntary labour ），全班分成了三组。你在第三组。请你用日记的形式写一篇短文。
参考词汇： litter 果皮纸屑等废弃物
2. 词数 100 左右。
April 28th Saturday Fine
It was Saturday， just before May Day. My classmates and I went to the park nearby， we didn't go there for amusement but took part in voluntary labor.
We got there at 9：00. We were divided into three groups and then began working. The students in Group One planted trees and watered flowers. The task for Group Two was collecting the litter left about by tourists and cleaning the benches. The group I was in got to the Children's Playground and wiped all the equipment clean. We worked very hard. At 11：00， when all the work was finished up， all my classmates met again. Although everyone was in a sweat， yet we felt happy because we had done good job.