用适当的介词完成下面的短文。
Our school held a sports meeting last week. It started ______ 8:00 am and lasted ______ six hours.______ the beginning of the meeting, the headmaster spoke ______ the students and teachers, then games began. A large number of students took part ______ the matches. ______ our surprise, many of them had a good record ______ the match, and won prizes ______ games. The meeting was a big success.