Sửa lỗi sai: 1. The house of which he paid $ 10,000, now worths $50,000. 2. You had no better smoke in public places. 3. There is a cat sitting in the middle to the road. 4. As a young man, darwin showed little promising as a biologist. 5. Even though she looks very young, she is twice older than my twenty-year-old sister. 6. We should have a medicine examination every six months. 7. Of all mammals, dolphins are undoubtedly between the friendliest to humans. 8. After questioning for a while, he finally admitted having stolen the camera. 9. In the past few years, this area has become heavily industrial. 10. In fact we are far more likely to injure in the home than outside, which has probably always been the case. 11. The light in the room has grom so dimly that she could no longer see well enough to read. 12. That these students have improved their grades because of their participation in the test review class. 13. A basic knowledge of social studies, such as history and geography, are considered a basic part of the education of every child. 14. Watching a baby between six and nine months old and you will observe the basic concept of geometry being learned.