an important position in a big company Richard has a good chance to improve himself.A. Of

问题补充：

an important position in a big company, Richard has a good chance to improve himself.

A. Offered

B. Offering

C. Having offered

D. To offer

答案：

(答案→)A. Offered

B. Offering

C. Having offered

D. To offer

解析：考查过去分词做状语，Richard和offer是被动关系，用过去分词做状语，句意：被大公司提供了一个重要的位置，理查德有机会提高自己。选A。