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

发布时间：2020-08-17 14:25:05

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

网友回答

A. add
B. to add
C. adding
(答案→)D. added
解析：由于add与其前的new events为被动关系，所以要用过去分词。
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