问题
选择题
There are many skirts in this shop. I can't choose .
A．what to buy
B．which one to buy
C．to buy which one
D．to buy which
答案
答案：B
题目分析：句意：这家商店有许多裙子。我不能决定该买哪一个了。前面是说裙子的种类多，不知道该挑选哪一件，所以A项表示“不知道该买什么”错误；该买哪一个用which one to buy来表示，即疑问词+不定式做动词choose的宾语；故选B。