The apartment has ____ floors and Mr．Black lives on the ____ floor with his family．（ ）
| A． |
twelve; twelve |
| B． |
twelve; twelfth |
| C． |
twelfth; twelfth |
The apartment has ____ floors and Mr．Black lives on the ____ floor with his family．（ ）
| A． |
twelve; twelve |
| B． |
twelve; twelfth |
| C． |
twelfth; twelfth |
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