Turn In

Common English verb phrase "Turn In" and it different meanings. How often do you hear or use this phrase?

1. To give something to someone in authority.
"I had to turn in my assignment." OR "I had to hand in my assignment."

2. To return something that you found.
"Did someone turn in a jacket to the 'lost and found?"

3. To tell the police about someone who committed a crime
"He turned in his neighbor for the robbery."

4. Go to bed
"It's getting late, so I think I'll turn in now."