I like browsing second-hand bookstores to look at English books. I sometimes find textbooks which are unfinished. The user must have given up in the middle. I did the same thing when I bought a French conversation book for beginners. I bought it new, tried some exercises, and sold it without finishing it. Yesterday, I bought “Cambridge Basic Vocabulary in Use” at a store. The book is 120 pages long and has 60 units. The previous owner filled in the exercises through Unit 20. I have a message for that person: “Dear former owner, thank you for filling in the exercises through the first part of the book. Now I am going to finish it. From the second owner of this book.” (122 words)
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