In the face of failure it is the most important to keep up good state of mind.A. / ; aB

问题补充：

In the face of failure, it is the most important to keep up good state of mind.

A. / ; a

B. a; /

C. the; /

D. /; the

答案：

(答案→)A. / ; a

B. a; /

C. the; /

D. /; the

解析：考查冠词的用法。failure“失败”，是不可数名词，第一个空不用冠词，排除B、C；a good state of mind“一种良好的心态”。句意“面对失败，保持一种良好的心态是最重要的。”故选A。