Faced with challenges you should believe that your courage is what makes difference.A. th

问题补充：

Faced with challenges, you should believe that your courage is what makes difference.

A. the; /

B. the; a

C. /; a

D. /; /

答案：

A. the; /

B. the; a

(答案→)C. /; a

D. /; /

解析：句意：面对挑战，我们应该相信你的勇气是很有影响的。第一空不填，这里泛指“挑战”，第二空填a，是词组“make a difference”有影响，有差别。选C。