2. They think that hitchhiking is a free fantastic way of travelling. Check

+ значит правильно (на мой взгляд)
1) +
2) Is Auatralia called the unknown southern land?
3) Between what oceans is Australian continent located?
4) +
5) What is the largest river in Australia?
6) Is The Darling a tributary of the Murrey river?
7) +
8) What kind of animals do live in Australia?
9) Where does a koala live?
10) Australian english differents from the others, doen't it?
11) перед capital должно быть the - столица у Автралии одна, артикль должен быть определённым.
12) What are the most known cities in Australia?