in/on/an/at 10 sentences

1) The teacher comes to school at 8 o'clock.

2) I don't usually work  in summer.

3) Some shops aren't open on the 1st of May.

4) Do you work at weekends?

5) There's a football match in May.

6) The boys have lunch at  1 o'clock.

7) They never eat in the evening.

8) The park isn't busy on Friday.

9)  It's on the shelf.

10) There are three pictures on the wall.

I think he was very unhappy at that time. His mum died in an accident. She was crossing the street when a car hit her. John was devastated by it. His dad had left home earlier. He worked on a ship like a lot of mem from Liverpool at that time. l think music helped him a lot in getting over it.