Passive or Causative?

Gap-fill exercise

Complete the second sentence so that it means the same as the first, using the word in bold. Then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. Note that you will lose points if you ask for hints!
1. Someone fixed our washing machine yesterday. had
We yesterday.
2. They gave me a prize for the best essay. given
I for the best essay.
3. Someone will tell them to stick to their routine. be
They to stick to their routine.
4. They have shown that working long hours causes stress. been
Working long hours to cause stress.
5. The doctor checked my hearing yesterday. had
I yesterday.
6. People know Mongolians for their nomadic lifestyle. are
Mongolians their nomadic lifestyle.
7. No one told Lucy about the party. been
Lucy about the party.
8. Someone broke into their house while they were away. had
They while they were away.