I want to buy a hat but there are so many kinds that I can’t decide to take.A. whichB. wh

问题补充：

I want to buy a hat, but there are so many kinds that I can’t decide to take.

A. which

B. when

C. how

D. where

答案：

(答案→)A. which

B. when

C. how

D. where

解析：“疑问词 + 动词不定式”是英语中常用的一种结构。在句中可以作主语、动词或介词的宾语以及表语。