làm giúp em với ạ giải thích nữa ạ 11. The rock formations in the Valley of Fire in Neveda has been worn into many strange shapes by the action of wind and water 12. Not only botanical gardens are places of beauty , they serve scientific and educational purposes as well 13. There are not many people whose adapt to a new culture without feeling some disorientation at first 14. Physical therapists help patients relearn how to use their bodies after disease or injure 15. San Francisco, that is a beautiful city, has a population of six million 16. Sheep have been domesticating for over 5,000 years 17. The electric toaster was one of the earliest appliance to be developed for the kitchen 18. Venus, the second planet from the sun, is exactly almost the same size as the Earth 19. In that age of computer, it is difficult to imagine how tedious the work of accountants and clerks must have been in the past 20.My brother stopped to smoke because it’s harmful for his health