Помогите пожалуйста разобраться!Безотлагательно нужно!

Write the negative form of the sentences.
1. This is our restaurant - this isn't our restaurant. 2. They are my cousins - they aren't my cousins. 3. She's my mother - she isn't my mother. 4. You're an actor - you aren't an actor. 5. He's twelve years old - he isn't twelve years old. 6. We're from Ireland - we aren't from Ireland.