— Beijing or Shanghai? What did you mean?
— We were talking about go to college.
A. how to
B. where to
C. whether to
D. when to
网友回答
A. how to
(答案→)B. where to
C. whether to
D. when to
解析：此题考查”疑问词+不定式”的用法。疑问词的选择取决于句子的内容，上文中提及Beijing or Shanghai，是对两个地点进行选择，因此下文只能是用where。