21.   China wants _____ greater say in the decision-making of the International Monetary Fund, and tougher regulations on _____ financial system in wealthy countries to prevent future problems.     
A. a; the       B. the; 不填               C. the; the                 D. a; 不填
22.   –Are you still very busy?      
--Yes, I _____ the report for the manager and it won’t take long. 
A. have just finished                        B. am just finishing
C. had just finished                         D. am just going to finish