问题补充:
The club, 25 years ago, is holding a party for past and present members.
A. founding
B. founded
C. being found
D. to have found
答案:
A. founding
(答案→)B. founded
C. being found
D. to have found
解析:句意:25年前建成的俱乐部,正为过去和现在的成员举行聚会,首先这个俱乐部是被人建立的所以排除A,又因为 25years ago,排除表示将来的D 和表示正在进行的C,所以答案为B。