tìm câu bị động+giải thích 11. They considered his speech one of the best. a. His speech was considered one of the best. b. His speech was one of the best. c. His speech one of the best was considered. d. His speech considered them one of the best. 15. She advised me to sell that house. a. I am advised to sell that house. b. I advised her to sell that house. c. I was advised to sell that house. d. She was advised to sell that house. 16. He recommends us to do the job. a. We are recommended to do the job. b. We recommended to do the job. c. We recommend him to do the job. d. A & C are correct. 17. She helps me to do all the difficult exercises. a. I am helped to do all the difficult exercises. b. I am helped her to do all the difficult exercises. c . I help her to do all the difficult exercises. d. B & C are correct. 18. How did the police find the lost man? a. How was the lost man found by the police? b. How the lost man found by the police? c. How the police found the lost man? d. How was the police found by the lost man? 20. How can they open this safe? a. How can this safe is opened? b. How can this safe opened? c. How can this safe be opened? d. B & C are correct.