1). It's a beautiful day, isn't it?
No it is.
Yes it is. -- CORRECT
Yes it isn't.
2). Do you know if we're going to get Christmas bonuses?
Yes, we did get bonuses.
Christmas is Dec. 25th.
I'm afraid I don't. -- CORRECT
3). Whose jacket is this?
Jack is away from his desk.
It's blue and white.
It looks like Wanda's. -- CORRECT