There are twelve months in a year. In the twelve months, February has twenty-eight days. In a leap year (闰年), it has twenty-nine days. A leap year comes every four years. The rest eleven months have thirty or thirty-one days. There are three hundred and sixty-five days in a year. But there are three hundred and sixty-six days in a leap year. There are seven days in a week. They are from Sunday to Saturday. Sunday is the first day of a week. The parts of a day are morning, noon, afternoon, evening and night. 小题1: There are twelve months in a leap year. 小题2:February only has twenty-eight days in a leap year. 小题3:Monday is the first day of a week. 小题4:There are five parts in a day. 小题5: When there are twenty-nine days in February, the year has three hundred and sixty-five days.