Who had been to visit his friends the ogre and stayed with him for seven years?
Had he been to visit his friends the ogre and stayed with him for seven years?
For how long had he been to visit his friends the ogre and stayed with him for seven years?
Had he been to visit his friends the ogre or the witch and stayed with him for seven years?
He had been to visit his friends the ogre and stayed with him for seven years, had he?