Avete già fatto l'albero di Natale?
(Have you decorated your Christmas tree yet?)
We bet those who follow the tradition of putting up a Christmas tree have already done so. That's why we have picked albero (tree) as our Word of the Week.
If you like to decorate two, three, ten or more trees, then you would use the plural: alberi (trees).
Listen to the children of the Coro dell'Antoniano sing about L'Albero di Natale and its sparkling lights: