—Could you tell me something about the boy who helped you just now?—Sorry I know nothing

问题补充：

—Could you tell me something about the boy who helped you just now?

—Sorry, I know nothing about him. We are .

A. friends

B. neighbors

C. classmates

D. strangers

答案：

A. friends

B. neighbors

C. classmates

(答案→)D. strangers

解析：此题重点考查对语句的整体理解，根据语境可知选择stranger，陌生人。