–Hi,Kate!Thereare        floorsinthisbuilding.Whichfloo...

问题详情：

–Hi, Kate! There are         floors in this building. Which floor do you live on?

–I live on the       floor.

A. twenty ; twelve          B. twenty; twelfth       C. twentieth; twelfth

【回答】

B

知识点：数词

题型：选择题