omplete the sentences with 'm not, isn't, or aren't. It's a pencil. It isn't 1 I'm British. I'm not a pen. American. 2 Tina's thirteen. She isn't fourteen. 3 He's my friend. He my brother. 4 You're in Scotland. You arent in England. 5 We're at school. We aren't at the cinema. 6 Mark and Lucy are students. They aren't teachers. 4​