Arrange the following sentences into a good paragraph.
1. Skateboarders skated on streets or sidewalks.
2. In the beginning, skateboarding was simple.
3. Today's skaters are like flying acrobats.
4. What secret powers do these skateboarders have?
5. Doesn‟t gravity apply to them?
6. They leap, skid over obstacles, flip, and turn at amazing speeds.
7. Their most exciting trick was to slide down the top of a hill.
8. The answer is simple: understand the laws of physics.