问题补充:
The meeting yesterday is of great importance .
A. being held
B. having held
C. to be held
D. held
答案:
A. being held
B. having held
C. to be held
(答案→)D. held
解析:考查过去分词做定语,因为meeting和hold是被动关系,而且是昨天已经被举行了,用过去分词作定语,句意是:昨天举行的会议很重要。A项做定语表示正在被举行的,B项不做定语,C项表示将要被举行的。选D。