1. Some body was recording our conversation. 2. We have seen her since last week 3. Bill is using the computer at the moment 4. Doctors have treated many people for burn 5. People were watching the match on TV 6. Nobody has stolen his watch 7. Mai does't do the test well 8. Our father hasn't repainted the gate gray 9. Alex wasn't singing a song when the doorbell rang 10. My mother usually feeds the dog 11. Alot of people can't use the train 12. The little girl has eaten the eggs 13. People play soccer all over the world 14. The postman brought the mail early today 15. My sister will hold a party next Sunday Giúp mk với ạ. Câu bị động.