Question

she____ my best friend.
they____ classmates.
Peter and Mary___classmate.
he____ my brother.
You___ a good student.
Peter and John____my brother
it___ an orange
they ____ sisters
​

Answer 1

is
are
are
is
are
is
are

Answer 2

1 IS

2 ARE

3 ARE

4 IS

5 ARE

6 ARE

7 IS

8 ARE

obs: fiz com base na coesão entre "is=é,are=ser", consultei meu professor de inglês e ele também disse que está certo. Espero ter ajudado