1.-I have seen many movies with special effects. 2.-He’s already climbed up mountain.

3.-My son has never spoken to a stranger online.

3.-She has been a doctor for 3 years.

5.-He’s never walked on fire. .

6.-Many animals have become extinct.

7.-They have never milked a cow.

8.-I have ridden a horse.

9.-He has played soccer for 2 years.

10.-Rafael has played tennis for 10 years.