It's my first week here. -
It's her second day here. -
Mark is his fourth son. -
He cooks this cake for the ninth time. -
August is the eighth month of the year. -
I wrote my sixth song. -
December is the twelfth month of the year. -
He lived in the eighteenth century. -
This is the fiftieth floor. -
Mary is his first love. -
Is this her seventh time in London? -
She goes to the dentist for the seventh time. -
He finished his eleventh book. -
My second dress is more beautiful. -
Tomorrow is the twenty-ninth of February! -
This is the ninety-ninth problem for me. -
He doesn't have the fourth lesson today. -
Is this your fifteenth time in Paris? -
This is the thirty-first floor. -
He travels alone for the first time. -