IV

1. plays

2. will go

3. Will / collect 

4. to do

5. going

6. did

7. are playing

8. do

9. playing

10. have collected

V

1. collection

2. birdwatched

3. photography

4. interesting 

5. Carved

6. activity

7. unusual

8. creative

VI

1. Nam is my classmates. He watches TV every night.

⇒ Nam is my classmate . He watches TV every night.

2. I think collecting stamps are interesting.

⇒ I think collecting stamps is interesting.

3.  My dad cooks very good. He loves preparing meals for our family.

⇒  My dad cooks very well. He loves preparing meals for our family.

4. I enjoy to ride my bike to school.

⇒ I enjoy riding my bike to school.

5. We usually go in a small lake out of the city at weekends.

⇒ We usually go to a small lake out of the city at weekends.

6. Do you still play football next year?

⇒ Will you still play football next year?

7. We like doing fishing because it is relaxing.

⇒ We like going fishing because it is relaxing.

8. Do you think bird-watching interesting?

⇒ Do you find bird-watching interesting?

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