I found this question as part of a set of questions. I'll just provide the answers of the set. It might help you with the other questions.
"The clock is underneath my desk?" - <span>el reloj esta abajo de mi escritorio </span>"There is a door." - <span>Hay una puerta. </span>"Its a table." - <span>Es una mesa </span>"Where are the posters"? - Donde estan los letreros / <span>Donde estan los carteles
How are "esta" and "estan" similar but different? </span><span>a. They are both third persons forms of the verb "estar", and one is singular and the other plural</span>
