He talked a lot about things and persons they remembered in the school. A. which B. that C

问题补充：

He talked a lot about things and persons they remembered in the school.

A. which

B. that

C. whom

D. what

答案：

A. which

(答案→)B. that

C. whom

D. what

解析：things和persons是先行词.当定语从句要修饰的先行词是既表示人,又表示物的名词时,其关系代词要用that.