Logic Riddles

Question: If there are three people and two of them are going to die, how do you know who is going to live?

Question: How do you run around your block 10 times without breathing heavily?

Question: You and me are the same, you see. So can you see what that makes me similarly?

Question: You want me more, you want me less. This is just how I put your control drama's to test. Wont matter if you watch me, i'll only seem to stall. It's seems just when I'm up is when you'll miss me at all.

Question: What word begins with letter H, but add it with W and it becomes another word yet pronounced just the same?