问题
选择题
The teaching building has five floors. My classroom is ________ the third floor. [ ]
A. on
B. in
C. at
D. to
答案
答案：A
搜题请搜索小程序“爱下问搜题”
The teaching building has five floors. My classroom is ________ the third floor. [ ]
A. on
B. in
C. at
D. to
答案：A