1. Janet and Daniel are ordinary people THAT took part in a history project for television
2. They said it was an experience WHICH they would never forget.
3. I'd like to go back to a time in history WHEN there was no pullution
4. A lot of Tourists visit the local museum, WHERE there are displays of prehistoric pottery and tools
5. I've visited the site of Machu Picchu in Peru, IT was an amazing experience
6. Leonardo da Vinci was a scientist WHICH inventions prepared the way for modern science
7. WHO should we give the award to?
8. To WHICH should we give the award?
