Fill in the gaps with at, in or on (Điền vào chỗ trống với at, in hoặc on) 1. The new school year is … September. 2. The first class is … 7:00 … the morning. 3. My maths lesson is … Friday. 4. There's a lunch break … noon. 5. The weather is very hot in Hö Chi Minh City … the summer. 6. My sister hasn't got much homework … the weekend. 7. The English Club is … Sunday mornings. 8. Teachers' Day is … November 20^th.