问题

There are six floors _ our school buildings. Our classroom is _ the third floor.

A:in; on
B:in; in
C:on; in
D:on; on;

正确答案是：

同类题型

下列句子中没有语病，语意明确的一项是( )

After living in Shanghai for 20 years, the couple returned to the small village ______ they grew up.

Tom and I good .

Many internet users, especially women, showed pictures of with an A4-sized piece of paper.

They are not allowed ____ here.