we must_____our minds about.make out \off\for\up,选什么

we must_____our minds about.make out \off\for\up,选什么
we must_____our minds about.make out \off\for\up,选什么

we must_____our minds about.make out \off\for\up,选什么
make up one's mind about doing / to do
下定决心做某事,认定某事

UP
make up one's mind about - - -
== decide on - - - -
== decide what to do about - -- -