After dinner they talked about the persons and things they still remembered.
A. which
B. that
C. who
D. what
网友回答
A. which
(答案→)B. that
C. who
D. what
解析：考查定语从句：句意：晚饭后，他们谈论他们还记得的人和事情。先行词是persons and things，定语从句缺少宾语，所以用关系代词that或which引导定语从句，因为先行词有人也有物，所以用that引导定语从句，选B。