I end and begin the day,
Without me, you'll pay.
With the aid of sheep,
All my benefits you shall reap.
If I make you miss class,
You shall not pass!
What am I?
Answer: Sleep.
This riddle appears in the following downloadable PDF files:
Can you solve one of the most famous logic puzzle ever?
Memory Matching game for kids, adults and seniors.
Connect the matching tiles and pop them all.