What he said at the meeting referred to he was interested in the project.A. thatB. whichC

问题补充：

What he said at the meeting referred to he was interested in the project.

A. that

B. which

C. what

D. the fact that

答案：

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。