Trả lời :
1. He has not learned today.
2. They have bought a new book.
3. They have not planned their holiday yet.
4. Where have you been?
5. I written four letters.
6. He has not seen her for a long time.
7. Have you ever been at school?
8. Has not started yet.
9. Has he spoken his boss?
10. No, she had the time yet.
* Chúc bạn năm mới vui vẻ, nhận được nhiều lì xì và hái được nhiều lộc nhé *