Solution:
- The capital city of Australia is Sydney / Canberra.
- There are big / aren't any deserts in Australia.
- Coober Pedy is on the coast / in the desert.
- All / Some of the people in Coober Pedy live under the ground.
- Not many / A lot of people go to see Coober Pedy every year.
- There are / aren't any underground hotels in Coober Pedy.
Answer: Canberra; big; in the desert; All; Not many; aren't any.