Sửa lỗi: (11 câu trên kèm ảnh dưới) 1. I have read "Gone with the Wind" when I was in highschool. 2. I thought it was a very depressed movie. 3. Hay fever symptoms ranged from mild to severe differ in degree according to the individual. 4. If one is invited for a birthday party, it is proper to go with a gift. 5. Mark Twain's "adventures of huckleberry finn" are one of America's national treasures. 6. Diamond itself is the only material hard enough to cut and polishes diamonds. 7. Until his last class at the university in 1978 bob always turns in all of his assignments on time. 8. Until the project completed, its the effects remains unknown, especially in rural areas. 9. Laser technology is the heart of a new generation of high-speed copiers and printer. 10. Lai Chau is not desenly population, with an average of only 35 people per square kilometer. 11. The purchase of Louisiana was one of the biggest events in the history of the United State.