Exercise 2. Chuyển những câu sau sang thể bị động ở dạng phủ định và câu hỏi 1. The teacher won't correct exercise tomorrow. 2. They didn't allow Tom to take these books home. 3. He can't repair my bike. 4. What language do people speak in this country? 5. He didn't type the letter last night. 6. How many trees did they cut down to build that fence? 7. They didn't look after the children properly. 8. When did you see him in that bank? 9. She didn't introduce me to her mother. 10. Did anymore take English books away? 11. He couldn't find his key. 12. When did you receive my letter? 13. How do you make a survey? 14. Will you post this letter on the way to work? 15. They can't carry the piano upstairs.