Soluzione del esercizio 2 di Step Up Gold 3

Esercizi svolti per il libro Step Up Gold 3

Soluzione

  1. It reduces stress and helps your immune system.
  2. You should wear a helmet.
  3. Eight to ten hours of sleep.
  4. They get headaches, become irritable and their grades suffer in school.
  5. At least one hour before bedtime.
  6. It makes you feel better. It's important for your mental and physical health.
  7. A chemical that reduces stress and make you feel happier.