Leaders from different parts of the world took part in the discussionthe international tre

问题补充：

Leaders from different parts of the world took part

in the discussionthe international treaty.

A. which leads to

B. leading to

C. led to

D. led to have

答案：

A. which leads to

(答案→)B. leading to

C. led to

D. led to have

解析：这题考查现在分词作定语,leading to修饰the discussion,相当于which led to…，A项的时态错误。句意是：来自世界各地的领导人参加促使国际条约的讨论。选B。