----- Nội dung dịch tự động từ ảnh ----- 11. Because people throw rubbish everywhere, the air is polluted. → If . 12. Before the tornado came, the villagers had left their houses. → After . 13. "I can't log in the Zoom meeting room because the Internet signal is weak", Tuan said. → Tuan said . 14. Scientists will create many kinds of robots in the future. (Change into passive voice) 15. Alexander Graham Bell /be/ inventor/ first telephone. (Complete sentence using words) 16. UK /have/ lot/ beautiful place,/ so/ attract/ many/ tourist/ every year. (Complete sentence using words)