Read the text and choose the right question for it.
The most popular Christmas decoration was invented by a German glass-blower. He made a ball and decorated it with angel figures and snowflakes. The man gave it as a gift to his daughter. The girl decided to put the ball on the Christmas tree. It was so beautiful that the glass-blower made many more decorated balls and sold them. Now people all over the world choose to decorate their Christmas trees in this way.

• How did the tradition of decorating the tree with coloured glass balls start?
• What is one of the legends of the Christmas tree?
• How did the technological progress change Christmas decorations?
• What are the advantages of artificial Christmas trees?