Grammar fix
cram for
study last-minute
To study a lot of material intensively in a short time, usually just before an exam.
phrasal verbB1common
Hear it in context
Notice where the phrase sounds natural.
I stayed up all night cramming for the chemistry exam.
A: Coming out tonight?
B: Can't — I'm cramming for my exam tomorrow.
Fix the pattern
One small grammar move makes it sound right.
Not: I crammed the exam all night.
Say: I crammed for the exam all night.
You cram FOR an exam — keep the 'for'.