Related Clues:
- Copier clog
- Study hard for exams
- Bases loaded situation, for the pitcher
- Ad-lib, musically
- Preserves, perhaps
- Sandwich filler, sometimes
- Study hard and fast
- Bone up
- Driving headache
- Sticky situation?
- Prepare for exams, maybe
- Commuter's woe
- What 20-, 37- and 53-Across may do
- Sandwich spread
- Play with friends