Đổi các câu sau sang phủ định và nghi vấn

Đổi các câu sau sang phủ định và nghi vấn:

1. My father decorated the Christmas tree.

2. She bought a new dress yesterday.

3. They were late for school.

4. Mr. Tam took his children to the museum last Sunday.

5. Hoa made a cushion for her armchair.

6. They painted their house yellow.

7. This dress was fit.

8. I saw her two days ago.

9. She went to school on foot

10. My mother watched a new film last night