Написать позитивные предложения в Present Perfect Tense

1. Kate has already seen that film. 2. I have lost my textbook, so I must buy a new one. 3. We have just finished our work, so we can go home now. 4. Nick has found a new job, that's why he is so busy now. 5. My parents have bought a new flat, which is bigger than the previous one.