"Hay muchos libros en ese cuarto."
Translation:There are a lot of books in that room.
Hmm... dealing with a computer here, so ........ I wonder how it handles "many books" as a translation. We would not say "there is many books in that room." But English varies around the world "team is" and "team are", for example. You know what you are doing, don't let Duo's quirks bother you. ;)