This is the fiftieth floor. -
May is the fifth month of the year. -
Is this the sixtieth floor? -
This is the twenty-fifth time I come here. -
He doesn't like my second wife. -
Mark is his fourth son. -
This is her fourteenth letter. -
He finished his eleventh book. -
He bought the sixty-sixth shirt. -
I give you the third chance. -
It's your sixth hour here. -
August is the eighth month of the year. -
I have the third lesson today. -
Jane is his first wife. -
Look at the second girl. -
Is this his fifth time here? -
This is my first pet. -
This is the thirty-first floor. -
Yesterday was her seventy-third birthday. -
Is this her seventh time in London? -