6. We have every reason to believe that ______ 2010 World Expo in Shanghai will be ______success.
A. the; a             B. the; /                            C. /; a                  D. a; a     
7. —Whe re is that report?
—I brought it to you _______ you were in Mr. Black’s office yesterday.       
A. if              B. because             C. when           D. before 
8. She will have to ______ herself to the new condition.
A. change        B. fit                            C. suit            D . adjust