What work can one never finish?

What does this say?

XLR8

I have a big mouth and I am also quite loud! I am NOT a gossip but I do get involved with everyone's dirty business.

Make eight squares by moving only two matchsticks.
Note- Square can be of different sizes.

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

What have one eye but still cannot see?

Guess the hidden movie name?

A lion and its tamer are standing inside a cage that measures 1 unit in radius. Both of them can effortlessly run at the speed of 1 unit maximum.

1) Suppose the lion is hungry, will he be able to eat up the tamer?
2) If yes, how long can the tamer survive?

A King wants to send the diamond ring to his girlfriend securely. He got multiple locks and their corresponding keys. His girlfriend does not have any keys to these locks and if he sends the key without a lock, the key can be copied in the way. How can King send the ring to his girlfriend securely?

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?