to polish a language
Verb
to advance someone in his career
Verb
to improve upon something
Verb
to improve on something
Verb
to move something along
Verb
to work up something
Verb
to polish something up
Verb
to get on with one's studies
Verb
to push one's conquests
Verb
to rub up one's French
Verb
to push one's business
Verb
to get the crowd to move on
Verb