Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Avoid At All Costs

This AP review book is a waste of money...I've taken the two diagnostic tests offered in the book and on several occasions, I have found the asnwer given in the book to be different from the actual answer. Some questions contain the correct numerical answer but the incorrect choice (A,B,C,D or E). Many of the questions are downright ridiculous...they wouldnt be on the AP exam because they are either too easy or too obscure. My teacher made copies (of certain sections) of The Princeton Review book, which I believe to be much better than the Barron's edition.