Here are the correct forms of the words to fill in the blanks:

1. The neighborhood has a low **crime** rate, making it a safe place for families.
2. The countryside is a **peaceful** place to relax and escape the noise of the city.
3. **Infrequent** bus service can make it difficult for people to commute to work.
4. The concert hall was **packed** with fans eager to see their favorite band perform.
5. Her **neighbor** is located in a quiet neighborhood close to the school.
6. **Commuting** by bike is a healthy and environmentally friendly way to get to school.
7. The new study shows the **affect** of social media on students' mental health.
8. Many students feel **stressed** during exam week because of the heavy workload.
9. The river was so **polluted** that swimming in it was unsafe.
10. The police caught the **criminal** who was responsible for the recent break-ins in our neighborhood.

Feel free to ask if you need further assistance!