问题补充：
We can see and in Australia.
A. sheeps; kangaroos
B. sheeps; kangarooes
C. sheep; kangarooes
D. sheep; kangaroos
答案：
A. sheeps; kangaroos
B. sheeps; kangarooes
C. sheep; kangarooes
(答案→)D. sheep; kangaroos
解析：此题考查名词的数。Sheep的单复数形式是一样的，kangaroo的复数形式是kangaroos。
