Verified answer

a) Mary is my best friend.

b) John and Andy are classmates.

c) Peter is my brother.

d) You are a good student.

e) They are in the classroom.

f) It is an orange.

g) Felicia and Mary are sisters.

h) I am her teacher.

i) It is a book bag.

j) You are a doctor.

2) a) I am not a teacher.

b) She is my mother.

Espero ter ajudado! :) (PS: marca como melhor resposta <3)