his watch is in his backpack改为否定句
his watch is in his backpack改为否定句
It is his backpack改否定句
This is his backpack.改成否定句
that is his old watch.(改为否定句)
is that your friend 改为复数句 is this his backpack作否定回答
Is his pencil in the red backpack 作否定回答
Is his pencil in thered backpack 否定回答
There are some books in his backpack.改为同义句
His pen is in the pencil case 改为否定句
1.david is going to watch a race with his dad(改为否定句)
his mother is teacher [改为否定句]
that is his jacket 改为否定句