Las preposiciones de tiempo: at, in, on

Completa las frases con la preposición de tiempo adecuada: at, in, on
1. My English class starts 7 o'clock the evening.
2. I never work the weekend.
3. Jane's birthday is 24th May.
4. It hardly ever snows in Barcelona the winter.
5. The exam in Friday morning.
6. The film finishes midnight.
7. Students are on holiday Christmas and Easter.
8. I was born 1983.
9. Teenagers often watch TV night and they are tired the morning.
10. John often goes for a walk Saturdays.