2. A writer works at house;
3. A student studies at university.
4. A journalist works for a news.
5. A teacher works in a school.
6. A waitress works in a restaurant.
7. A policeman works in the station.
8. A nurse works in a hospital.
Насчёт 2 предложения - у писателей нет постоянного места работы, поэтому, написала house - часто они работают дома.