Those are theirs.的同义句?

Those are theirs.的同义句? Those children are theirs的同义句是什么 Those toys are theirs.(同义句转换) those coats are theirs同义句 those　bikes　are　not　　theirs,改同义句 These books are theirs. 的同义句 Those brushes are theirs.(改单数句) these books are theirs.同义句 these balls are theirs改为同义句 Are those their balls?的同义句 those are orange oranges的同义句 Are those your books的同义句