1. D) es
2. A) están
3. C) está
4. B) son
Answer:
Donde estudian Isabel y sus amigas?
Explanation:
Instead of saying where they study(which is in the library) you would ask where they study. Sorry if I'm too late.
Answer:
A vivieron
Explanation:
Because ellos could be used as a pronoun for sus padres, so it would be vivieron.