答案:On October 8th we celebrated our school’s 50th anniversary. A great number of former students and retired teachers came to the celebration. In the morning, teachers as well as students gave a warm welcome to the guests at the school gate. After that, our headmaster gave a speech about great changes in our school these years, which greatly impressed everyone. Then some students showed the retired teachers around our beautiful campus. In the afternoon, a big party was held. We gave wonderful performances, singing and dancing. All of us enjoyed it very much. In the end, some of the guests donated some books to our school. Through this activity, I know more about our school and we’re proud to be members of the big family.