She bought the flat on the thirtieth floor. -
He bought the sixty-sixth shirt. -
It's my fiftieth birthday. -
Thursday is the fourth day of the week. -
I go to the university on the sixth of September. -
She travels alone for the second time. -
It's our fifth year here. -
I finished my first book! -
Is Saturday the sixth day of the week? -
Tomorrow is the twenty-ninth of February! -
Today is the thirtieth of April. -
He goes to the doctor for the third time. -
I wrote my sixth song. -
It's his third month here. -
Is this her seventh time in London? -
He took the twenty-third place. -
She took the thirty-sixth place. -
He travels alone for the first time. -
This is the ninety-ninth problem for me. -
Is this the sixtieth floor? -