It's his third month here. -
Mark is his fourth son. -
It's my first week here. -
Yesterday he had his sixth exam. -
This is the ninety-ninth problem for me. -
He finished his eleventh book. -
I have the third lesson today. -
He took the twenty-third place. -
This is the thirty-third time you tell me this story. -
This is the twenty-fifth time I come here. -
This is not the thirtieth floor. -
Is this her seventh time in London? -
Read the seventh part of the book. -
Her shop is the third to the left. -
I finished my first book! -
He travels alone for the first time. -
This is our ninth dancing class. -
This is my tenth car. -
Today is the thirtieth of April. -
This king lived in the twelfth century. -