The local health organization is reported to ( ) twenty-five years ago when Mr.xxx became its ...A.to be set up B.to have been set upC.being set up D.having been set up这个知识点是关于啥的,以前老师讲过,可是现在忘得差不多了.

The local health organization is reported to ( ) twenty-five years ago when Mr.xxx became its ...
A.to be set up B.to have been set up
C.being set up D.having been set up
这个知识点是关于啥的,以前老师讲过,可是现在忘得差不多了.

看题可以先排除C和D, 因为不需要用到动词的ING形式,而是to be形式,twenty-five years ago 表示过去,但对于现在报导这个时间来说是已经完成了,所以应该用完成时态,健康组织又是被建立的,选B.