Change into passive voice

Change into passive voice
1. People rumored that there was a ghost in that house
-> There....
2. Someone said that Jane would be able to win the contest
-> It...
3. They claimed that everything they said was true
-> They
4. They reported that there was a serious accident on the main road
-> There was...
5. They don't think that this camera costs that much
-> It...
6. Did they claim that they had managed to solve the problem?
-> 
7. People didn't expect that the building collapsed after the storm.
-> It was
giúp mk vs