make up your mind

Từ điển Oxford Advanced Learner 8th

make up your ˈmind | make your ˈmind up idiom
to decide sth
•They're both beautiful— I can't make up my mind.
•Have you made up your minds where to go for your honeymoon?
•You'll never persuade him to stay— his mind's made up (= he has definitely decided to go).
•Come on— it's make your mind up time!
Main entry: ↑mind_idiom