Ответ:

  1. I live in the mountains.
  2. Do you swim much?
  3. They always return on time.
  4. The train leaves at 8.30 a.m.
  5. Jeremy walks to school.
  6. Kate and Nikita take a school bus every morning.
  7. Does Amie miss her parents?
  8. They usually play basketball on Friday.
  9. I always pass the park on my way home.
  10. Water boils at 100°C.

Использовано настоящее простое время: в утвердительных предложениях с he/she/it к глаголу добавляется окончание -s/-es, а в вопросах употребляются do/does и начальная форма глагола.