Определение времени и залога.

[Sevil]

Здравствуйте. Помогите пожалуйста. Надо подчеркнуть сказуемое, определить его время и залог.
1. Nobody knew inhabitants of this house.
2. It was a powerful explosion and the building was destroyed.
3. He was a man of determined character.
4. His guilt was clear to all the people assembled in the hall.
5. I dont't see the equipment that will be useful for our experiment.