1.The house was built in 1899.
Was the house built in 1899?
The house wasn't built in 1899.
2.The lion was killed by the hunter.
Was the lion killed by the hunter?
The lion wasn't killed by the hunter.
3.He was given a book for his birthday.
Was he given a book for his birthday?
He wasn't given a book for his birthday.
4.Our planet is wrapped in a mass of gases.
Is our planet wrapped in a mass of gases ?
Our planet isn't wrapped in a mass of gases.