Answer:
When is homework not homework?
How do you drop an egg and never break it?
A bike rider is traveling north at 25 mph, a car passes the bike rider going north at 40 mph. At the same time the bike rider passes a jogger running north at 5 mph. Which will move away from the bike rider at a faster pace, the car or the jogger?
The more that there is of this, the less you see. What is it?
What can fill an entire room without taking up any space?
It is something you will never see again.