brush up on something
brush up something

If you plan to be there, brush up on your singing.

Go to another wall to brush up on black women writers.

Well, this'll give you a chance to brush up on your Newton.

But in order to do this I had to brush up on my sales and marketing skills.

But I can brush up a little on my chemistry.

It's also a good place to brush up on your French.

I usually try to brush up on the local language, but not this time.

You've had more than enough time to brush up on your language skills.

This is my next order: you're going back to school for a few months to brush up on your English.

There was no time to brush up on the language.