Logic Riddles

Question: A man has hundreds of bodies buried on his land, many of which are cops and criminals. Many people find out what he has been doing, but none go to the police.

Why not?

Question: Swallowing one is fine.
Swallowing two together is fine.
But Swallow them separately and all shall fall.

What are they?

Question: Change a long pause into a short one by doubling a letter.What are the words?

Question: Two men went into a restaurant. They sat at a table and the waiter came by and asked, "What do you want to drink?"

The first man said, "I'll have H₂0."

The second man said, "I'll have H₂0 too."

The second man died.

Why?

Question: It is able, but not capable.
It can stop, but not go.
It is dead, but not yet perished.
It's a ghost, but not paranormal.

Is it high, or is it low?