1.How do people make candles?

⇒How are candles made (by people)?

2.They use a computer to do that job nowadays

⇒A computer is used to do that job nowadays

3. Parents always give me proper encouragement

⇒I am always given proper encouragement by parents

( Proper encouragement is always given me by parents)

4. They asked me some difficult questions at the interview

⇒Some difficult questions were asked me at the interview

( I was asked some questions at the interview)

5. Where did you keep my books?

⇒Where were my books kept by you?

`1.` How are candles made?

`2.` A computer is used to do that job nowadays.
`3.` Proper encouragement is always given to me by parents.
`4.` I was asked some difficult questions at the interview.

`5.` Where were my books kept by you?