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?        _______________