8) 1C, 2A, 3D, 4A, 5B, 6A
9)
1. Modern graffiti began in big cities in the United States.
2. Demetrius's tag was TAKI 183.
3. Young people wrote their own tags on New York walls.
4).Aerosol paint graffiti became popular in the 1970s and 1980s.
5.No, it isn't.
6. Artists can paint in graffiti zones in Taiwan.