Write the verb in present perfect simple or in present perfect en BE +Ving:
In Australia, I (see) many wild animals like kangaroos, koalas, snakes. I (swim) in the Great Barrier Reef for hours, it's like an aquarium. I (try) to learn how to play didgeridoo with an aborigine, but you need a lot of practice before you can make a sound. The aborigine (play) all his life since he was a child. (make) friend with a boy whose ancestors were convicts, he (show) how to throw a boomerang.
