Open the brackets and compare Australia with Canada. Use a bit, much and a lot.
Model: Canada is... (big) than Australia.- Canads id much bigger than Australia.

1. Australia is...(small) than Canada.
2. Canada is (cold) than Australia.
3.Australians are... (good) swimmers than Canadians.
4. Australia...(young) than Canada.
5. Australian koalas are...(friendly) than Canadian polar bears.