 This book is the only work of fiction by Steiner to have been adapted for the stage . 
 This book <a href='drop_aux' title='1'><mark>is</mark></a>the only work of fiction by Steiner to <a href='been_done' title='2'><mark>have</mark></a> been adapted for the stage . 
Dis book da only work of fiction by Steiner to done been adapted for tdastage .