Resposta:
1. You are nice
2. It is a bird
3. He is a boy
4. I am a funny girl
5. They are my friends
6. She is young
7. We are happy
1. It's a flower // Isn't a tree
2. We're students // Weren't teachers
3. I'm happy // I ain't sad (não sei se está certo)
4. She's short // She isn't tall
5. They're at home // They aren't at school
6. He's my brother // He isn't my friend
7. You're pretty // You aren't ugly
