1. We are supplied with a great source of vitamin E by nuts 

2. they declared that she was had won the competition

3. Mr.Hai is said to be the breadwinner in his family 

4. Tea can't be made with cold water 

5. The president was reported to suffered a heart attack 

   - it was reported that the President had suffered a heart attack

6. We have our car repaired by the mechanic 

  - Our car has repaired by the mechanic 

1. Nuts supply us with a great source of vitamin E.

⇒ A great source of vitamin E Alzheimer is supplied us by Nuts.

2. They declared that she won the competition.

⇒ She was declared to win the competition.

3. People say that Mr.Hai is the breadwinner in his family.

⇒ Mr Hai is said to be the breadwinner in his family.

4. They can't make tea with cold water.

⇒ Tea can't be made with cold water. 

5. They reported that the President had suffered a heart attack.

⇒ The President was reported to have suffered a heart attack.

6. We have the mechanic repair our car.

⇒ We had our car repaired.