Don’t worry too much about mistakes. They are natural part of learning.A. /; aB. the; /C

问题补充：

Don’t worry too much about mistakes. They are natural part of learning.

A. /; a

B. the; /

C. /; the

D. the; the

答案：

(答案→)A. /; a

B. the; /

C. /; the

D. the; the

解析：考查冠词：第一空泛指“错误”不填冠词，第二空填a，泛指一个学习的自然的部分，句意：别太担心错误，它们是学习的自然的部分。选A。