There'resomanykindsofmobilephonesonsalethatIcan'tmakeu...

问题详情：

 There're so many kinds of mobile phones on sale that I can't make up my mind_____ to buy.

    A. which                   B. what                     C. how               D. where

【回答】

A 

知识点：相似 相近词比较

题型：选择题