We have every reason to believe that London Olympics will be great success. A. a; /

问题补充：

We have every reason to believe that London Olympics will be great success.

A. a; /

B. the; /

C. the; a

D. a; a

答案：

A. a; /

B. the; /

(答案→)C. the; a

D. a; a

解析：考查冠词题。第一格特指奥运会；第二格是抽象名词具体化，a success表示一件成功的事情或一个成功的人。