hard work it is today! A. HowB. How aC. What aD. What

问题补充：

hard work it is today!

A. How

B. How a

C. What a

D. What

答案：

A. How

B. How a

C. What a

(答案→)D. What

解析：本题考查的是感叹句的结构，因为work为不可数名词，其感叹句所对应的结构，为What adj +n(u)+主谓！故选D