Giải cho mk bài này với : 1. They grow rice in tropical contries => 2. Someone brock his windows last night=> 3. The police didn't find the lost boy yesterday=> 4. they were carrying the injured plays off the field at that time=> 5. Jack has typed the articel recently=> 6. the police haven't found the murdereryet=> 7. children should treat old men with respect=> 8. the computer can do all the accounts=> 9. they are going to build a new school=> 10. he isn't going to buy that house=> 11. they will pull down that house=> 12. nobdyhas used this room for ages=> 13. no one can solve that problem=> 14. no one told us the new=> 15. The teacher will give her a prize she works well=> 16. Her mother bought her a doll last week=> 17. Ihve heard her sing this song several times=> 18. They reported that President had suffered a heard attack => => 19. The hairdresser is cutting Mary's hair now. => Mary is having her hair ................ => Mary is having the hairdresser.................... 20. People know that English is an international language => It is know........ 21. They said that she won the compeition => =>