✔ 最佳答案
Actually, both answers are correct,
Remember, whenver it comes to grammar problems, as long as you use it correctly, there are thousands of ways to express a sentence. The only concern is which one fits better.
In this case, I will say Tomorrow is Christmas as it is a fact, BUT it doesnt mean the other one is incorrect, again, both answers are good.
2008-03-27 14:40:32 補充:
sorry, i misspelled a word, it should be 'whenever'