to try hard to improve or achieve sth :
You need to work on your pronunciation a bit more.
'Have you sorted out a babysitter yet?' 'No, but I'm working on it .'
to try hard to improve or achieve sth :
You need to work on your pronunciation a bit more.
'Have you sorted out a babysitter yet?' 'No, but I'm working on it .'
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005