помогите с решением))) под буквой  b. 50 баллов

1. Susan's new to the school2. I'm 14 years old.3. They're in Room E.4. He's my best friend.5. You're in Grade 7.1. Susan isn't new to the school2. I'm not 14 years old.3. They aren't in Room E.4. He isn't my best friend.5. You aren't in Grade 7.

b)1. Susan is new to the school.2. I am 14 years old.3. They are in Room E.4. He is my best friend.5. You are in Grade 7.c)1. Susan isn't new to the school.2. I'm not 14 years old.3. They aren't in Room E.4. He isn't my best friend.5. You aren't in Grade 7.