Question

d Correct the mistakes.
1. Are teachers.
2. It is students.
3. He is John and i am Amy.
4. She's police officer.
5. I be happy.​

Answer 1

Resposta:

1 - They are teachers.   OU   The teachers. (não tenho certeza mas acredito que seja isso que o livro pretende)

2 - They are students.

3 - He is John and I am Amy. (não vejo nada errado nessa)

4 - She is a police officer.

5 - I am happy.

Na 3 realmente não entendo o que possa estar mal, mas mesmo assim espero ter ajudado!!  :)