Question

Cathy has a dog. Cathy doesn’t have a dog.S

Answer 1

Можешь объяснить что надо сделать?

Answer 2

The two statements provided seem contradictory:

1. "Cathy has a dog."
2. "Cathy doesn't have a dog."

These statements cannot both be true simultaneously. One of them must be false. It's possible that there was a mistake or misunderstanding in the information given.

If you have any additional context or clarification about the situation, please provide it, and I'll do my best to help you with the given information.