同学,很高兴回答你的问题
你这句话结尾也没有写标点,不知是句号,还是问号,而且括号中填的词数也不限
如果是问号,则写
What is the first day of a year?或
Which day is the first day of a year?
一年的第一天是哪一天?
如果结尾是句号,则写
January 1st is the first day of a year.
一月一日是一年的第一天.
或New Year's Day is the first day of a year.
元旦是一年的第一天.
有不明白的请继续追问,