Mistakes don’t just happen, but they occur for a reason. What we ought to do is find out the reason and then making the mistakes .
A. reasonable
B. essential
C. considerate
D. worthwhile
网友回答
A. reasonable
B. essential
C. considerate
(答案→)D. worthwhile
解析：考查形容词。句意：错误的发生往往是有原因的。我们应该做的是找出出错的原因然后让错误变得有价值。A、合情合理的；B、重要的；C、考虑周到的；D、值得的；有价值的，所以答案选D。