The question ________ at yesterday’s meeting hasn’t been made ________ yet．
A.discussing; know
B.discussed; known
C.being discussed; know
D.to be discussed; know
网友回答
B解析据推测句意为：昨天在会议上讨论的问题还不为人所知。过去分词(discussed)作定语表示问题已被讨论过。过去分词(known)作主补，表示未为人所知。全句意为：昨天会议上所讨论的问题还不为人所知。