Answer:
5. Nosotros usamos el libro de texto
6. Ella repasa mucho para el examen
7. Tu hablas con tus amigos en clase
Part 1.
Number 1. Nosotros.
Number 2. Ellas.
Number 3. Ella.
Number 4. Tu.
You are using "SER" which is the to be. I have to go but I wish I can help with the second. Bye!
1. D
2. B
3. C
These are the answers, I speak spanish, so, good luck
Oof your on your own for this one good luck