III. Đổi những câu sau đây từ bị động sang chủ động.

1. This book is bought by my mother.

2. The export division is managed by Mr. Sam.

3. English is spoken.

4. The bike is ridden by Nina every evening.

5. Information technology is studied everyday.

6. An English book is bought by my best friend.

7. The dog is sold by Sam.

8. My room is decorated.

9. The car is washed.

10. The house is cleaned.