Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Difficult to Finish

The subject matter is tedious to begin with so you can't fault the writer for that. I found this book very difficult to get through and I am not sure why. I felt that many of the grammatical and usage explanations were incomplete. I think there are numerous errors and inconsistencies in the answer key. I found the chronic use of the progressive tense annoying and more frequent than contemporary Italian usage. This book has excellent word lists and great appendices. When I finally finished, I pulled those pages out of the book, punched holes in them and added them to my Italian grammar notebook. If you actually write the exercises in the book, it will be a mess when you're done. If you plan on reusing this one, do the exercises on a separate piece of paper. You may need a dictionary to complete the exercises.