1. People say that he is the breadwinner in his family.
-> It is said that he is the breadwinner in his family.
-> He is the breadwinner in his family.

2. People know that vitamin C is good for treating colds.
-> It is known that vitamin C is good for treating colds.
-> Vitamin C is good for treating colds.

3. People think that Peter exercises regularly.
-> It is thought that Peter exercises regularly.
-> Peter exercises regularly.

4. Everyone believes that reading books widens our knowledge.
-> It is believed that reading books widens our knowledge.
-> Reading books widens our knowledge.

5. Everyone thinks that technology brings a lot of trouble to our life.
-> It is thought that technology brings a lot of trouble to our life.
-> Technology brings a lot of trouble to our life.

6. They think that some naughty boys killed the cat.
-> It is thought that some naughty boys killed the cat.
-> Some naughty boys killed the cat.

7. They believe that Smith left London last week.
-> It is believed that Smith left London last week.
-> Smith left London last week.

8. They report that three workers died in the coal mine collapse.
-> It is reported that three workers died in the coal mine collapse.
-> Three workers died in the coal mine collapse.

9. Everyone knows that the portrait was painted by an Italian.
-> It is known that the portrait was painted by an Italian.
-> The portrait was painted by an Italian.

10. It is said that Laura won a special prize at the annual musical competition.
-> Laura won a special prize at the annual musical competition.