问题
选择题
—Are you going to but a new camera?
—Yes. But there are so many cameras that I can’t decide______________.
A. how to use B. where to sell C. which to buy
答案
答案：C
题目分析：句意为：---你打算买一部新照相机吗？---是的。但是有那么多照相机以致我不能决定该买哪一个。这是一个含有宾语从句的复合句。从句的引导词在句中作动词不定式to buy的宾语，故选C。