1.Past tense: The answer effectively uses the past simple tense ("were," "looked forward to," "was," "enjoying," "participating," "dressing up") to describe past events and experiences, which is appropriate for the context of the question.
2.Listing: The use of commas to list multiple activities ("Enjoying the fireworks during New Year's Eve, participating in school events and festivals, and dressing up for Halloween and going trick-or-treating") demonstrates the ability to structure complex sentences clearly.