Phủ định:
1. I didn't write her any letters last week.
2. There aren't a lot of trees in the park.
3. My cousin isn't reading an interesting book in her room.
4. They didn't send her any postcards from Italy.
5. I don't like reading books in my free time.
6. He hasn't written her any letters.
7. The dentist didn't say that he should go to the hospital.
8. She rarely doesn't visit her friends at night.
9. They won't send her any emails.
10. My uncle can't make nice beds.

Nghi vấn:
1. Did I write her any letters last week?
2. Are there a lot of trees in the park?
3. Is my cousin reading an interesting book in her room?
4. Did they send her any postcards from Italy?
5. Do I like reading books in my free time?
6. Has he written her any letters?
7. Did the dentist say that he should go to the hospital?
8. Does she rarely visit her friends at night?
9. Will they send her any emails?
10. Can my uncle make nice beds?