Book 5: The Horse and His Boy (or is it A Horse and His Boy?)
This cover must have torn off early on. All of the books in the set disintegrated pretty quick. They were very cheap paperbacks. In any case, I have no distinct memory of this cover. If I really think about it, I can conjure this bridge with a city gate and some domed buildings. It could be an interior illustration for all I know. But it's all I can recall, so here it is.
What I remember from the story:
Next to nothing. Here's what I can come up with: The horse and his boy go to a middle-eastern type of city. The land of the Telemarketers, no, the Telgemeiers (no, that's a graphic novelist) the Targaryens (no, wrong fantasy series) the Tralfamadorians (no, that's Kurt Vonnegut) it was......................the Land of the Telmarines! Boom! You didn't think I could do it, did you? The land of the Telmarines. It was a middle eastern city with no Narnians or talking animals.
There was an evil(?) ruler who had to be referred to as "______-may-he-live-forever." I can't remember the name, but he had to have the "may-he-live-forever" at the end of his name.
And that's all. If there were English children in this book, I don't remember them.