----- Nội dung dịch tự động từ ảnh ----- 1. 2. 3. 4. 5. 6. 7. 8. 9. They have just painted those posters. The builders were building a new bridge. Ba is preparing a report now. Some one was making coffee when I came.→ No one has changed the room. They haven't bought the flowers yet. People are laughing at him. Some body was recording our conversation.- We have seen her since last week.. 10. 11. Bill is using the computer at the moment. → Doctors have treated many people for burn.→ 12. People were watching the match on T.V. → 13. Nobody has stolen his watch. 15. Mai doesn't do the test well. The test. 16. Our father hasn't repainted the gate gray. → The gate....... 17. 18. Those posters Alex wasn't singing a song when the doorbell rang. A song.. The students mustn't clean the floor every day. The floor...... My mother usually feeds the dog. The dog... 20. A lot of people can't use the train. 19. →