选择正确的选项补全对话。Lucy：This country is Australia.
Peter：Yes, I do.
Lucy：What do they speak?
Peter：
Lucy：Look！
Peter：It's the flag of the U. K.
Lucy：
Peter：Kangaroos.

A. What animals live in Australia? B. Do you know the capital city of Australia? C. There is a little flag inside Australia's flag. D. They speak English. E. It's Canberra.