1. My sisters just came from school. 2. How long do children sleep? 3. Has Kack already finished the exercise? It's only been 10 minutes since I dictated it. 4. Have you ever tried to help him? 5. Arthur has been practicing the piano since 8 o'clock. 6. What will your brothers do after school? 7. We have been working in the garden for more than three hours and we are not tired yet. 8. I haven't heard from them lately. 9. Did you read poetry by my bank colleague? 10. You've been playing cards for about two hours, but you haven't finished your homework yet. 11. Harry hasn't given his wife flowers in a long time. 12. How long has David known the truth about his grandfather? 13. I've been thinking about what she said for more than two hours and I still can't understand what happened there. 14. I often tried to tell him the truth. 15. She never understood him. 16. They have improved their pronunciation a lot this year. 17. What important museums in the world have you visited so far? 18. How long has Christine stopped smoking? 19. The soup boils at ten o'clock, but it is not ready yet. 20. My friends will go abroad as soon as they buy their car. Spor la lucru !
