Witaj :)
1. He hasn't worked in Canada.
2. I have been in the garden.
3. Has she written many books?
4. They haven't finished the exercises.
5. Have you eaten fish for lunch?
6. We haven't climbed many mountains.
7. Has she told him the truth?
8. I haven't had a headache.
9. She hasn't met Tom.
10. He has waited for me for three hours.