Поставьте следующие предложения в вопросительную и отрицательную форму.
1. She must study very hard. 2. You must help her. 3. We must learn many new words. 4. They must read more. 5. We must come to the office in time. 6. You must do it quickly. 7. You can take this book. 8 You may enter the room. 9. She can ask questions. 10. They may continue reading. 11. I can give you some money. 12. He may leave the room. 13. Ann can buy this book, if she likes. 14. They may go now. 15. You may open the window. 16 You must work hard, 17. You may come to see me. 18. You must speak English at the lessons. 19. You may read this book. 20. You can have a rest. 21. We can speak English now. 22. We can see them out of the window. 23. They can come soon. 24. John can sing very well. 25. He can drive well. 26. You can have coffee or tea.