where’s his black backpack?改为复数形式
where’s his black backpack?改为复数形式
My aunt has a childwhere’s his black backpack?改为复数形式
It's my backpack.改为复数形式
This is my pencil.(改为复数句) It's his backpack.(改为复数句)
The black backpack is Tom's 改为同义句.
The black bike is his 改为复数
It's his tape player改为复数形式
where's my backpack?
it' s a backpack.(改为复数句)
where is she (改为复数形式)
where is your dictionary改为复数形式
This is his sister and that,s his son.怎么改为复数形式