5. This is the house which/where I grew up in.
6. Some environmental problems that/what occurred were predictable.
7. They'll protect all the endangered species of animals that/what
they think have their habitats there.
8. No one was expecting that/what came next.
9. It's that/what I had read about before.
10. It's just that/what I'd like to know about.
Помогите пожалуйста)​