(isn't,are,is, aren't) 1)she.......a cook. She is a nurse. 2) They....... sad. They are happy. 3)There......... three trees. 4)They ..... firefighterd.​

Respuesta :

Answer:

1. isn't

2. aren't

3.is

4.are

Explanation:

i think 4 is meant to be firefighters