Choose the correct option.

1. I went/have been to new york two years ago.

2. This restaurant opened/has opened in 2015.

3. We lived/have lived in this house for two months now, so it's beginning to feel like home.

4. I knew/have known Paul since i was five years old-he's my best friend.

5. Did you see/have you seen emily yesterday?

6. Did you ever go/have you ever been to paris?.