It's your sixth hour here. -
Mark is his fourth son. -
Is this his fifth time here? -
What is the third day of the week? -
It's my first week here. -
"O" is the fifteenth letter of the alphabet. -
Is this the sixtieth floor? -
We go to New York on the sixteenth of January -
Tomorrow is her sixtieth birthday. -
Yesterday was the seventeenth of July. -
I read the fourth book. -
This is our tenth meeting. -
This is our ninth dancing class. -
She travels alone for the second time. -
She took the thirty-sixth place. -
Thursday is the fourth day of the week. -
He finished his eleventh book. -
I give you the third chance. -
My second dress is more beautiful. -
My birthday is on the nineteenth of January. -