1. I've just had my breakfast.
2. He has already had his breakfast.
3. We have not had our breakfast yet.
4. They are still drinking tea in the dining room.
5. I have already done my homework.
6. They are still doing their homework.
7. We have had three lessons today.
8. She has not read the book yet.
10. Is she still reading?
11. Who wrote this?
12. What did you write to him?