Odpowiedź:
1. You have closed the door.
2. They have washed the dishes.
3. She hasn't saved all her work.
4. We haven't downloaded a television serial.
5. He has visited his friends.
6. I have bought a new car.
7. They haven't forgotten their passwords.
8. Linda has swum in a swimming pool.
9. Kate and Tom have rung their grandmother.
10. I haven't eaten lunch.
Wyjaśnienie:
