-- beautiful day it is! Let’s go climbing today!-Good idea!A. HowB. How a C. WhatD. Wha

问题补充：

-- beautiful day it is! Let’s go climbing today! ---Good idea!

A. How

B. How a

C. What

D. What a

答案：

A. How

B. How a

C. What

(答案→)D. What a

解析：在What+a+adj+n为可数单数+主谓！故选将主谓去掉，最后一词为可数名词，故选A