—Excuse me. Where is Mr Green’s office?—It’s on floor.A. sevenB. the sevenC. seventhD. t

问题补充：

—Excuse me. Where is Mr Green’s office?

—It’s on floor.

A. seven

B. the seven

C. seventh

D. the seventh

答案：

A. seven

B. the seven

C. seventh

(答案→)D. the seventh

解析：本题的意思为第七层，表示是次序，用序数词，在前通常要加the，故本题选D。