关于非谓语的单选题There have beenseveral new events_______to the program for the 2008 Beijing Olympic Games.A.add B.to add C.adding D.added

关于非谓语的单选题There have beenseveral new events_______to the program for the 2008 Beijing Olympic Games.A.add B.to add C.adding D.added
关于非谓语的单选题
There have beenseveral new events_______to the program for the 2008 Beijing Olympic Games.
A.add B.to add C.adding D.added

关于非谓语的单选题There have beenseveral new events_______to the program for the 2008 Beijing Olympic Games.A.add B.to add C.adding D.added
d.2008年的北京奥运会已经增加了一些新项目.