Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Not a useful book

I found this book to be very outdated and I hardly ever use it. The exercises in it are arcane and not readily tranferrable to the ESL class room. I would not recommend buying this book, but going online and keywording "ESL conversation" and the topic you want the students to talk about. Alot is available online that is simpler to use in classes.