BE UP TO SB


Meaning of BE UP TO SB in English

to be sb's duty or responsibility; to be for sb to decide :

It's not up to you to tell me how to do my job.

Shall we eat out or stay in? It's up to you.

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.