The little girl couldn't be a student because of her _____.[ ]

A. ill    

B. sick

C. illness    

D. sad

Recently in China, the brain drain has been ______. That is to say, there has been a _______ of the

process across China.[      ]

A.  refuse.  refusal       

B.  change; change  

C.  arrive; arrival      

D.  reversed; reversal