Question

правильно ли написаны вопросы и ответы к ним?
Is she having a party? - Yes.she's going to buy a new dress.
Is father 
going to wear a coat? - No, he's
going
 
to wear a polo.
Is you

going to wear
 a blazer? - No.i am  

going to wear a coat. 

Answer 1

Is she having a party& - Yes. She is going to buy a new dress.
Is YOUR father going to wear a coat& - No ,he ISN'T going to wear a polo.
ARE you going to wear a blazer? - No , I am not going to wear a coat.

Answer 2

Is she having a party?
-Yes, she is. She is having a party.
Is you father going to wear a coat?
-No , he isn't. He id going to wear a polo.
Are you going to wear a blazer?
- No, i'm not. I going to wear a coat.