Present perfect or simple past?

Answers

1. He worked at a bar when he was younger.
2. I haven’t seen her since last Monday.
3. He died three years ago.
4. She has been unhappy since she left her home.
5. They finished the job last week.
6. They haven’t started working yet.
7. She has been ill ill since last month.
8. Nobody has seen him since that fateful evening.
9. Have you ever been to Venice?