Revising

Bureaucrats are testing the waters over revising old regulations.

Our policies and systems are getting outdated and need revising, but to try to swap horses while crossing a stream might be dangerous.

I am revising my Chinese lessons.

Tom is revising for his exam of tomorrow.

She spent the whole weekend revising.

I've finished revising.

I'll start revising next week.

Tom whiled away a few hours before dinner revising his travel plans for his upcoming trip.

She's supposed to be revising, Tom.

He spent all of last night revising that document.