Công thức - bị động:

- Thì QKĐ: S + was/were + V3/ed 

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1. The Great Wall was built by the Chinese.

2. The film was seen by many people.

3. The strange sea creatures were discovered by American scientists.

4. These beautiful pictures were painted by a Russian.

5. These photos were taken by Lucy's brother.

6. This nest was built by a huge bird.

7. These words were written by a famous person.

8. The corn was eaten by hungry mice.

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