Judging by the he keeps Mark must be an extremely wealthy man.A. cooperationB. character

问题补充：

Judging by the he keeps, Mark must be an extremely wealthy man.

A. cooperation

B. characteristic

C. motivation

D. company

答案：

A. cooperation

B. characteristic

C. motivation

(答案→)D. company

解析：考查名词辨析。A合作；B特点，特征；C动机；D陪伴。句意：从他结交的朋友可以看出，马克一定是一个极其富有的人。故选D。