6. From Sept. 3 to 9，_____Chinese President Hu Jintao will pay _____ state visit to Australia and attend the 15th economic leaders' informal meeting of Asia-Pacific Economic Cooperation.

A. the, a      B.  the, the      C. /, a       D.  / , the

7. _______that’s the case, you _____ try.

A. If , might as well               

B. If,  may as well

C. Whether ,  may well              

D. Whether, might  well

8 . _____ was feared that they _____ not be able to defend the town.

A. It , would      B. This, will    

C. It, will     D. He, would