--How old is your father?

--________ is fifty years old.

1. A.
   She
2. B.
   He
3. C.
   We
4. D.
   You

 —David, how old is your father this year?

—______. And we just had a special party for his _____ birthday last weekend.

    A. Fortieth; forty      B. Forty; forty         C. Forty; fortieth  D. Fortieth; fortieth

- David, how old is your father this year?

        - ———— And we just had a special party for his _____ birthday last weekend.

            A. Fortieth; forty                  B. Forty; forty

            C. Forty; fortieth                   D. Fortieth; fortieth