1. Kate waiting (to wait) for her flight in the airport since eleven o’clock? – No, she hasn't . She has been waiting (to wait) for her fight for twelve minutes now. 2. Can I talk with you? – Sorry, I’m busy. I looking for (to look) for one important thing for more than fifteen minutes now and can’t find it. 3. Is John at home? No, he is in the gym. He (to train) since four o’clock. 4. cooks your dad (to work) as a doctor for five years? – No, he . He (to work) as a doctor for ten years. 5. Is Ben fixing the washing machine? Yes, he (to fix) it since ten o’clock. 6. Liza and Alice (to paint) the walls in the room for three hours. They (to work) since morning. 7. The Jacksons (to build) their house for five years now. 8. Is granny in the kitchen? – Yes, she cooks (to cook) since five o’clock. 9. You look tired! – Well, I collected (to gather) blueberry for more than three hours. 10. Where is Sam? – He is in the library. He (to read) the book since afternoon.

Here are the sentences with the correct verb forms filled in: 1. Is Kate waiting for her flight in the airport since eleven o’clock? – No, she hasn't. She has been waiting for her flight for twelve minutes now. 2. Can I talk with you? – Sorry, I’m busy. I have been looking for one important thing for more than fifteen minutes now and can’t find it. 3. Is John at home? No, he is in the gym. He has been training since four o’clock. 4. Does your dad work as a doctor for five years? – No, he doesn’t. He has been working as a doctor for ten years. 5. Is Ben fixing the washing machine? Yes, he has been fixing it since ten o’clock. 6. Liza and Alice have been painting the walls in the room for three hours. They have been working since morning. 7. The Jacksons have been building their house for five years now. 8. Is granny in the kitchen? – Yes, she has been cooking since five o’clock. 9. You look tired! – Well, I have been collecting blueberries for more than three hours. 10. Where is Sam? – He is in the library. He has been reading the book since afternoon. Feel free to ask if you need more help with your exam preparation!