Tìm lỗi sai và sửa lại
1. Destroyed complete during thư war, this city has now rebuild fast
2. The effects of cigarette has been proved to be extremely harmful
3. In some cases, advertisements make people to buy things that they do not really want
4. Although polar bears hunts other animals, they seldom rarely kill people
5. Hanoi has been the economic, culture,and political center of the Vietnamese
6. The earth is the only planet with a large number of oxigen in its atmosphere
7. Nearly all chemical agents are harmful to living tissue if enough of them is taken
8. By meauring the color of star, astronomers can tell how hot is it