Is this the eightieth floor? -
This is my first pet. -
He goes to the doctor for the third time. -
May is the fifth month of the year. -
"O" is the fifteenth letter of the alphabet. -
It's our fifth year here. -
Today is the thirtieth of April. -
This is her fourteenth letter. -
I finished my first book! -
This is his thirteenth message. -
Do you like my third appartment? -
Is Saturday the sixth day of the week? -
It's his third month here. -
My parents bought the second flat. -
I read the fourth book. -
I hear this for the third time. -
Yesterday he had his sixth exam. -
This is the thirty-third time you tell me this story. -
I wrote my sixth song. -
John is my first love. -