This activity book includes various exercises: comprehension questions and in-context vocabulary (synonyms and antonyms, fill in the blanks) and grammar (plurals and various grammatical topics) exercises based on 10 songs from the songbook. The activities will help you learn vocabulary in different contexts (not only Christmas) and master some tricky grammar points.
You can find the solutions in the solved version of this book and in mp3 audio files recorded by me.
Sample:
https://drive.google.com/file/d/1IdPHsX5BOkrRxjBQb8msNzRzuZPDfsW5/view?usp=sharing