Leaders from different parts of the world took part
in the discussion the international treaty.
A. which leads to
B. leading to
C. led to
D. led to have
网友回答
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。