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There have been several new events ______to the program for the 2008 Beijing Olympic Games.

A.add                           B.to add

C.adding                      D.added

There have been several new events __________ to the program for the 2008 Beijing Olympic Games.

A. add     B. to add

C. adding       D. added

There have been several new events _______ to the program for the 2008 Beijing Olympic Games.

       A．add                                             B．to add

       C．adding                                         D．added

 There have been several new events ________ to the program for the 2008 Beijing Olympic Games.

   A. add            B. to add            C. adding          D. added

There have been several new events ________ to the program for the 2008 Beijing Olympic Games.

A.add 　 B. to add 　 C. adding 　 D. added