Those brushes are theirs.(改单数句)

Those brushes are theirs.(改单数句) those　bikes　are　not　　theirs,改同义句 Are those oranges?单数句怎样改 Those toys are theirs.(同义句转换) Those are theirs.的同义句? those coats are theirs同义句 Those children are theirs的同义句是什么 are those our english books?改单数 Are those dirty brushes Mary's brushes?(改为陈述句) Those are aren't orenges （改为单数句）怎么改? Those are my friends 改为单数句 those are orange towels改为单数句