Jack is 40 and he feels his career as actor is coming to end.A. 不填；theB. the; anC. an; a

问题补充：

Jack is 40 and he feels his career as actor is coming to end.

A. 不填；the

B. the; an

C. an; an

D. an; 不填

答案：

A. 不填；the

B. the; an

(答案→)C. an; an

D. an; 不填

解析：考查冠词：句意：杰克现在40岁，他觉得做为演员的事业要结束了。第一空填an，泛指“一个演员”，第二空填an，come to an end是词组，“结束”，选C。