Chuyển các câu sau sang dạng quá khứ

II: Chuyển các câu sau sang dạng quá khứ

1. This is the notebook of Mary. ->………………………………………

2. The tool of the mason is heavy. . ->………………………………………

3. They are her children. . ->………………………………………

4. The coat of the boy is torn. . ->………………………………………

5. Is Mr. Van the friend of Mr. Dong ? ->………………………………………

6. The windows of the house are green. . ->………………………………………

7. Are the caps on the shelves ? ->………………………………………

8. The desks of the pupils are always clean. . ->………………………………………

9. He isn’t John Keats. . ->………………………………………

10. Their house is in the country. . ->………………………………………