the correct answer should be :
Lidia nunca habia perdido su trompeta antes del ensayo
(with a grave accent on the i de habia)
hope this helps
In Spanish, when you want to greet someone with respect you should address them with "Usted" because "Tu" wouldn't be good manners and improper.
Answer:
Usted trabaja en la biblioteca.
Nosotros estamos enfermos.
Explanation:
Hope this helps