I often reply to his blog only 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：考察名词，A 成就 B 同意 C注意力 D 欣赏 ，感激
句意为，我经常回复他的博客，就是为了表达我对他的体贴周到的感激