that building is a library变成复数形式?请老师们指导
that building is a library变成复数形式?请老师们指导
There is a library in Building A 变为复数
That's a box变成复数形式
This is a sweater.变成复数形式
IS there a library near this supermarket[改为复数形式}
there is a library in this building 这句变为复数
That is a map变成复数
Is that his class?怎么变成复数形式?
that is a nice photo 复数形式
Is that a bus?复数形式
that is a jacket 变复数形式
Is that a photo?的复数形式