the reason i’m learning english is pretty simple. i want to be able to make friends with people from various countries.
it would be great (that/if) i could talk to them in korean or their native languages, but it’s not possible for me to learn every language in the world.

문장에서 it 이 가리키는게 무엇인가요.. 의미상 if라는 것은 알겠지만
it이 마치 가주어 같아서 that을 선택해야하는 것 같습니다..
정확하고 쉽게 설명부탁해요