Respuesta :
Use the correct form of the verb ser or estar:
Ellas __________ muy tristes.
Answer : Ellas están muy tristes.
explanation : "estar" is used to describe the mood or emotions. As the subject in this sentence is Ellas, third plural person, the verb must be conjugated in third plural person too. Ellas están.
[tex]\textit{\textbf{Spymore}}[/tex]