问题补充:
I firmly believe he said at the meeting was right.
A. that
B. which
C. that what
D. what that
答案:
A. that
B. which
(答案→)C. that what
D. what that
解析:that 连接宾语从句作believe 的宾语,what连接he said从句作said的宾语what he said at the meeting是一个主语从句。句意:我坚信他在会上所说的话是正确的。