选词填空。
【小题1】There are ________ (twelve; twelfth) months in a year. December is the ________ (twelve; twelfth) month.
【小题2】Sunday is the ________ (one; first) day of a week.
【小题3】There are ________ (seven; seventh) days in a week.
【小题4】My birthday is in ________ (June; July). It’s the sixth month of the year.
【小题5】There are ________ (eleven; eleventh) girls in the game. Lucy is the ________ (eleven; eleventh).