Possible version：
Last December 5th our class organized an activity to celebrate the International Volunteer Day. We decided to spend the afternoon doing something for our school instead of having classes.
At the beginning of the first class in the morning, we gathered in our classroom and our monitor told us what we would do. As soon as we were divided into four groups we began to work separately. I was in Group 1. My classmates and I were responsible for the security of the school. We patrolled the campus with the guard to make sure everyone was safe at school. The students of Group 2 went to the garden to take care of the plants. Some were watering the flowers and trees while the others were trimming the bush. The third group helped the cook prepare for the dishes. They washed the vegetables and cut them into small places. Group 4 worked in the lab where they cleaned the test tubes and put them in good order. Having got the work done we all felt a sense of achievement. At the end of the last afternoon class we got together again in our classroom and elected the top ten volunteers for the day.
What a valuable experience I had in the high school! I’ll remember it forever.(184)
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