Составить придложение . 1.teacher, school, teach students 2.greengrocer,greengrocer's, sell fruit and vegetables 3.postman,post office, take letters to people's houses 4.waiter, cafe, serve people

1. Teacher teaches students at school.
2. Greengrocer sells fruit and vegetables at greengrocer's.
3. Postman takes letters to people's houses and works in post office.
4. Waiter serves people in cafe.