1. In England, schools usually start at||in||on 9 a.m. and finish at||in||on 4 p.m.
2. They built our school a long time ago, maybe in||on||at 1990.
3. We are going to visit Thang Long Lower Secondary School in||on||at January.
4. The school year usually begins on||in||at September 5th every year.
5. The children like playing badminton and football at||in||on their break time.