Помогите пожалуйста!!!!!

1). It isn't at three o'clock. It's at four o'clock.
2). You aren't fifteen. You're fourteen.
3).She isn't in a chess club. She's in a climbing club.
4). We aren't from Czech Republic. We're from Hungary.
5). They aren't in London. They're in New York.
6). I am not Emily. I'm Kate.