It's my fiftieth birthday. -
He lived in the eighteenth century. -
Mark is his fourth son. -
Is Saturday the sixth day of the week? -
Is this the eightieth floor? -
He cooks this cake for the ninth time. -
He watched the first film. -
I wrote my sixth song. -
My birthday is on the nineteenth of January. -
I go to the university on the sixth of September. -
He finished his eleventh book. -
This king lived in the twelfth century. -
He goes to the doctor for the third time. -
Do you like the twelfth video? -
She goes to the dentist for the seventh time. -
This is the thirty-first floor. -
This is the twenty-fifth time I come here. -
Is this the sixtieth floor? -
She takes her cat to the vet for the fourth time. -
I give you the third chance. -