cram
* She's been cramming hard all week.
* I have to cram for my chemistry test tomorrow.
bone up
* I have to bone up on criminal law for a test next week.
mug up
* Jeannie can't come. She's busy mugging up on science for her exam.
swot
* students swotting for exams
swot up
* I spent all last night swotting up German verbs.
chyba starczy xD