He was always for knowledge and at last became an expert in the field of art.A. fondB. c

问题补充：

He was always for knowledge, and at last became an expert in the field of art.

A. fond

B. content

C. brave

D. greedy

答案：

A. fond

B. content

C. brave

(答案→)D. greedy

解析：词义辨析。A. 温柔的 B. 满足的；满意的 C.勇敢的 D. 贪婪的；渴望的。根据题意，他总是对知识如饥似渴，最后他成为了艺术领域的一名专家。故选D。