The two books are the same except (for the fact) that this one has an answer key at the back.
The two books are the same except (for the fact) that this one has an answer key at the back.
除了这本书后面有问题答案以外,这两本书完全一样.
The two books are the same except (for the fact) that this one has an answer key at the back.
除了这本书后面有问题答案以外,这两本书完全一样.