Riddle You This (VI)

1. Arnold Schwarzenegger has a long one. Jamie Fox has a short one. Madonna doesn't have one. Bill Clinton has one and uses it all the time, and the pope has one and never uses it what is it?

2. What object has keys that open no locks, space but no room, and you can enter but not go in?

3. What 7-letter word becomes longer when the third letter is removed?

4. What is it that when you take away the whole, you still have some left over?

5. What six-letter word in the English language contains ten other words without rearranging any of its letters?