澳大利亚大陆自西向东可明显的分为三大地形区，西部是_______高原，有著名的_________巨石，中部是_________盆地，地下水可以自动流出水面称为__________，东部是低矮的_____________。东北部海岸外侧，有举世闻名的_________ 。墨累河发源于____________，自东向西注入________洋。

— Got your driving license?

— No. I ________ too busy to have enough practice, so I didn't take the driving test last week.[ ]

A. was  

B. am

C. have been  

D. had been