This is a question about an exercise problem from my textbook. The task is to insert the correct form of "všechno" into a blank in the sentence "Už četl _______ jeho knihy." The expected answer is "všechny." I have two question about this: (1) Is this the only possible option? For instance, can one say something like "Už četl všechno (?) jeho knihy" to mean "He's already read all of his (single) book"? (2) I think "Už četl všechny jeho knihy" means "He's already read all his books." The word order used in "všechny jeho knihy" matches that in the corresponding English phrase. Is that the most common word order?