英语选择—Which dress do you like best,Madam?

问题描述:

英语选择—Which dress do you like best,Madam?
—Which dress do you like best,Madam?
—Sorry,I can’t decide______ now.
A.to buy which one B.buy which one
C.which one to buy D.which I should buy it
我知道选什么,我只要问为什么A错了,A好像没有任何语法上的错误啊

这种结构一般是特殊疑问词放在不定式之前的.例如最简单的 I don't know what to do, i don't know where to go.特殊疑问词放在不定式之前的,所以只能选C...