1. Nam is my classmates. He watches TV every night.
Sửa: classmates ( Nam là danh từ số ít)
2. I think collecting stamps are interesting.
Sửa: is
3. My dad cooks very good. He loves preparing meals for our family.
Sửa: well
4. I enjoy to ride my bike to school.
Sửa: riding (enjoy +Ving)
5. We usually go in a small lake out of the city at weekends.
Sửa: to
6. Do you still play football next year?
Sửa: Will ( thì tương lai)
7. We like doing fishing because it is relaxing.
Sửa: going ( going fishing: đi câu cá)
8. Do you think bird-watching interesting?
Sửa: find
Nếu đúng thì cho mình 5 sao nhé!!!~