Here are the suggested words to fill in the blanks:

1. **shopping**
2. **goes on**
3. **symbols**
4. **same**
5. **opened**

So the completed text would read:

"During Christmas, people enjoy (1) **shopping**, meeting each other, among other fun activities. The celebration (2) **goes on** until New Year’s Day. Many people use symbols to commemorate this special day, and the Christmas tree is one of the mostly used (3) **symbols** all over the world. People cut or buy Christmas trees and decorate it to suit their mood. It’s under the Christmas tree that many people get to place gifts for one another. The gifts are often (4) **opened** during Boxing Day, which is on the 26th of December."