—May I open the window to let in some fresh air ?—.A. Come on !B. Take care !C. Go ahead

问题补充：

—May I open the window to let in some fresh air ?

—.

A. Come on !

B. Take care !

C. Go ahead !

D. Hold on !

答案：

A. Come on !

B. Take care !

(答案→)C. Go ahead !

D. Hold on !

解析：考察交际用语。A. 来吧 B. 小心 C.继续吧 D. 坚持住。句意：我可以打开窗户放进点新鲜空气来吗？可知选C最符合语境。