Is the kangaroo Australian?为什么用Australian?

Is the kangaroo Australian?为什么用Australian? 一篇初三英语阅读题The red kangaroo is a famous special Australian ani Australian 英语翻译The smallest continent is the Australian mainland,with a The (Australia\Australian) girl's is pretty . 选哪个 The doctor is an Australian.(同义句改写) THE AUSTRALIAN NATIONAL UNIVERSITY怎么样 an Australian a Australian还是 an Australian my friend is from —[australian]. David is from Australian.错在哪里 David is from Australian错在哪里