this is a bus.【变为复数句】
this is a bus.【变为复数句】
Is this a bus (改为复数句
that is a bus.(变为复数句)
this is a bus.把它改为复数句
This is a pen变为复数句,怎么变
What is this?变为复数句___________________________.
Is this your book ? 变为复数句
This is my sister(变为复数句)
单数句变复数句This is a box.This is a bus.Tt is a ruler.This isn't
ls this a bus复数句
This is a bus.改为复数.
This is a pen 变为复数