The second one is better. The first mixes present and past tense.

Thanks K P, I agree with you, at first, I thought same with your curiosity about island and continent. Have a good day KP.

Ruslan, I know, I was just curious) Sorry) I recently learned that in different countries they give different lists of continents in school. 5 or 6 or 7.. So I got curious, if Australia is an island for Indonesians:))

I have known Australia is a continent since when I was a child. That was a tricky sentence in the toefl test. That was all about grammar not geography :-)

Normally Australia is considered a continent. Sometimes 'continent' is defined from geological perspective, so the continent of Australia may include or exclude New Guinea and othetr islands (Oceania, the name of the region, in some countries serves also as the name of this continent...). Of course you may count Australia as 'the largest island within the continen of Australia':) One may argue then that Eurasia+Africa comprise even larger island.... Is it different in Indonesian schools? Do you consider Australia 'the largest island'?