III. There is one mistake in each sentence. Underline and correct the mistake.
1. Nam is my classmates. He watches TV every night. _____________
2. I think collecting stamps are interesting. _______________
3. My Dad cooks very good. He loves preparing meals for our family. _____________
4. I enjoy to ride my bike to school. ______________
5. We usually go in a small lake out of the city at weekends. ________________
6. Do you still play football next year? ______________
7. We like doing fishing because it is relaxing. ______________
8. Do you think bird-watching interesting? _______________