Underline mistakes and then correct it

VI. Thereisonemistakeineachsentence.Underlineandcorrectthe 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?