Составьте отрицательную форму предложений the children's costumes were scary. there was an owl in the house. the old

The children\'s costumes were scary. -  The children\'s costumes were not scary. There was an owl in the house. - There was not an owl in the house. The old lady offered the children some treats. - The old lady did not offer the children some treats. Mum believed the children\'s story. - Mum didn\'t believe the children\'s story.