interesting news it is!I think so.A. what anB. HowCWhatD. How an

问题补充：

--- interesting news it is!--- I think so.

A. what an

B. How

CWhat

D. How an

答案：

A. what an

B. How

(答案→)C. What

D. How an

解析：此题重点考查感叹句的结构，本题的中心词是news，是不可数名词故选C.