Breakdown of La llave tiene que estar detrás de este tapiz.
estar
to be (location/state)
la llave
the key
tener
to have
que
that (relative pronoun, conjunction)
este
this (m.sg., also esta, estos, estas, esto)
detrás de
behind
el tapiz
the tapestry
Elon.io is an online learning platform
We have an entire course teaching Spanish (Spain) grammar and vocabulary.