What he said at the meeting referred to he was interested in the project.
A. that
B. which
C. what
D. the fact that
网友回答
A. that
B. which
C. what
(答案→)D. the fact that
解析：考查同位语从句。句意：在会议上他所说的话提到了他对这个工程感兴趣这个事实。that he was interested in the project从句解释前面的名词the fact，是同位语从句，所以选D。