Помогите 3 4 5 задание пожалуйста срочно

task 3

1.it

2. they

3. it

4. they

5. she

task 4

1. This coffee isn't hot

2. Sam isn't in the classroom

3. We aren't 18 years old

4. They aren't from Spain

5. I'm not hungry

task 5.

a) false

b) false

c) true

d) false