What's this?

What's this?

AN ADVENT CALENDAR is a decorative piece of card or cloth with a small space or window for each of the days of the month before Christmas. Each day a space or window is opened to find a different picture, a piece of chocolate, or a present.

These are bubbles.

AN ELF is a small, imaginary person, usually shown in pictures dressed in green with pointed ears and a tall hat, and often described in stories as playing tricks and having magical powers.

Xmas carols are ___ in Vietnamese.

long pieces of thin, shiny material used as decoration, especially at Christmas

Which one is NOT about Xmas?

a small evergreen tree (= one that never loses its leaves) with shiny, sharp leaves and small, round, red fruit. Holly is often used as a Christmas decoration in Europe and North America.