They live on the second floor, and we live on the first floor．We live ________ them．

1. A.
   below
2. B.
   over
3. C.
   above
4. D.
   under

They live_____ the _____ floor.
           A. on, nine            B. in, ninth                   C. on, ninth           D. on, nineth
   

 They live_____ the _____ floor.        

A. on, nine    B. in, ninth   C. on, ninth   D. on, nineth