Thereisn’tanydifferencebetweenthetwo.Ireallydon’tknow

问题详情：

There isn’t any difference between the two. I really don’t know _______.

A. where to choose   B. which to choose        C. to choose what       D. to choose which

【回答】

B  考查疑问词+不定式。句意：这两个之间没有什么不同，我真不知道该选择哪一个。

知识点：非谓语动词

题型：选择题