People think that opening ceremony of the 29th Olympic Games is great success.A. an; aB.

问题补充：

People think that opening ceremony of the 29th Olympic Games is great success.

A. an; a

B. the ; a

C. the ;the

D. the ; /

答案：

A. an; a

B. the ; a

C. the ;the

(答案→)D. the ; /

解析：专指奥运会开幕式；成功，抽象名词不可数。