1. There are (twelve) months in a year. December is the (twelfth) month of it.
2. June (first) is Children's day.
3. Is the volleyball match on August (second)?
4. May is the (fifth) month of a year.
5. He was born in 1992 and it was his (fourteenth) birthday in 2006.
6. Today let's learn the (nineth) lesson.