----- Nội dung ảnh ----- 1. Change these sentences into passive: 1. Somebody cleans the house every day. 2. How do people learn language? 3. John will collect me at the airport. 4. Mr. Robinson teaches us how to speak English properly. 5. Your teacher must sign this form. 6. People play football all over the world. 7. Our form teacher will hold a class discussion next Monday. 8. Will you invite her to your birthday party? 9. We can't wear jeans at work. 10. Do they speak French and English in Canada? 11. They separated the rice from the husk. 12. The boys made a fire by their camp. 13. They built this house more than one hundred years ago. 14. Every year Vietnam exports millions of tons of rice.