根据句意及首字母补全在本课中出现的单词。

1. M_____ Christmas and Happy New Year!

2. Fish can't live w_____ water.

3. Let's d_____ our classroom before they come here.

4. Oh C_____ day,families open the presents they have give each other.

5. B_____ the way, how old are you?

6. There is a bird at the t_____ of the tree.