I’m thirsty. I want to buy something .A. to drinkB. drinkC. drinking D. for drink

问题补充：

I’m thirsty. I want to buy something .

A. to drink

B. drink

C. drinking

D. for drink

答案：

(答案→)A. to drink

B. drink

C. drinking

D. for drink

解析：本题的含义是我渴了，我想买一些喝的东西，动词drink修饰不定代词something通常位于不定代词后用动词不定式作后置定语，故选A。