I wrote him a letter to show my of his thoughtfulness.
A. achievement
B. agreement
C. attention
D. appreciation
网友回答
A. achievement
B. agreement
C. attention
(答案→)D. appreciation
解析:考查名词:A. achievement成就B. agreement 协议C. attention注意D. appreciation欣赏,句意:我写信给他表示对他考虑周到的感谢。选D。