It seems like your sentence was cut off, but I'll complete it in a way that provides a useful response:

"American children have exciting after-school activities."

This is generally true, as many American children participate in a wide variety of extracurricular activities after school hours. These can include:

1. Sports (soccer, basketball, football, baseball, etc.)
2. Music lessons (piano, violin, guitar, etc.)
3. Dance classes (ballet, hip-hop, jazz, etc.)
4. Art programs
5. Drama clubs and theater productions
6. Science and robotics clubs
7. Debate and public speaking teams
8. Language learning groups
9. Tutoring or mentoring programs
10. Community service initiatives

These activities help children develop new skills, make friends, stay active, and explore their interests outside of regular school hours. They contribute to the overall development and well-being of young people in the United States.