用适当的数词填空。
（1）There are ________ letters in English alphabet (字母表).
（2）There are ________ hours in a day.
（3）There are ________ days in a year.
（4）Monday is the ________ day of the week.
（5）There are ________ days in a week.
（6）There are ________ days in October.
（7） ________ ________ is Christmas Day.
（8）There are ________ months in a year.
（9） Forty minus three is ________.
（10）There are ________ seasons in a year.