I, Tìm lỗi sai và sửa :
1. In the 1920s cinema became an important art form and one of the ten largest industry => industries in the US
2. In some cases , advertisement make people to buy => buy things that they do not really want.
3. Geogre told Mary that he has=> had seen this film three times.
4. It was so => such nice weather that we would like to go to the beach
5. Though it is one of the rarest metals, gold was one of the first to be discover=> discovered .
6. Although polar bears hunt other animals, they seldom => omitted rarely kill people.
7. Hanoi has been the economic, culture => cultural and political center of the Vietnamese.
8. The earth is the only planet with a large number => amount of oxygen in its atmosphere.
9. Nearly all chemical agents are harmful to living tissue if enough of them is => are taken.
10. By measuring the color of the star, astronomers can tell how hot is it => it is.
