1. My sister has been to the USA twice.
2. Kate has lost my english coursebook.
3. We have seen this film many times.
4. Starcy has forgotten your telephone number.
5. Peter and Mike have bought new (U2 CD/2 CD's [?]).
6. Mum has cooked delicious dinner.
7. My best friend has become more self-confident.
8. I have finished doing my homework.
Po osobie dopisujemy have/has(dla 3 osoby l.poj.), a czasownik zamieniamy na trzecią formę. Reszta pozostaje bez zmian.