Answer:
enough, (much could also work) (any could also work)
Step-by-step explanation:
I was cramming for the exam, so I didn't get enough sleep today.
I was cramming for the exam, so I didn't get much sleep today.
I was cramming for the exam, so I didn't get any sleep today.
I hope this helps! Sorry for giving more than one answer, any of those can work and make sense in the sentence.