they couldn’t make her change her mind.A. Hard as they triedB. Tried hard as theyC. As t

问题补充：

, they couldn’t make her change her mind.

A. Hard as they tried

B. Tried hard as they

C. As they tried hard

D. They tried as hard

答案：

(答案→)A. Hard as they tried

B. Tried hard as they

C. As they tried hard

D. They tried as hard

解析：考查as引导让步状语从句。As使用让步状语从句，使用部分倒装，其倒装结构为： 过去分词/形容词 /名词/副词/动词原形 + as + 主语 + 系动词。故选A。句意：尽管他们努力劝说，还是不能改变她的心意。