There have been several new events___ to the program for the 2008Beijing Olymoic Games.

问题描述:

There have been several new events___ to the program for the 2008Beijing Olymoic Games.
A.add   B.to add
C.adding  D.added

D
因为主句是现在完成时
表示已经发生了,所以用D
如果是正在发生,就可以用C