During the long course of history the Chinese people have working with diligence braver

问题补充：

During the long course of history, the Chinese people have, working with diligence, bravery and wisdom, created beautiful homeland where all ethnic groups live in harmony, and developed great culture.

A. a, a

B. /, the

C. /, a

D. a, the

答案：

(答案→)A. a, a

B. /, the

C. /, a

D. a, the

解析：句意：在过去漫长的历史中，中国人民用勤劳、勇敢和智慧创造了一个各民族和谐相处的一个美丽家园，培育了一种伟大文化。第一空填a，指“一个美丽家园”，第二空填a，指“一种文化”，这是抽象名词具体化。所以选A。