Ответ:

1. None of his parents realized the danger. (Correct)
2. I asked him if he knows the way. (Mistake: should be "if he knew the way")
3. Everybody can to play field hockey at Hill School. (Mistake: should be "can play field hockey at Hill School.")
4. Kate wants joining as many clubs as possible. (Mistake: should be "Kate wants to join as many clubs as possible.")
5. Our train is arriving at 7 p.m. tomorrow. (Correct)