1. - Open the window
- But I've opened the window
2. I've seen the film
3. He has opened the door
4. They've cleaned the room
5. - But I've vashed them
6. It's the funnyest picture I've ever seen
7. I haven't met him for 3 days
8. It's the most difficult text we've ever translated
9. Has he ever been...
10. Have you ever been at the art gallery