Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Terrible software - I gave it back

When I got this product, I thought it was a bit strange, because I received, literally, a Sony CD-R with 20 photocopied pages.Its presentation is terrible, but I thought the software might be good. Unfortunately, it's not at all. There are many tests, but no good explanation about your mistakes.Among all types of tests, it covers only the grammar tests. No listening nor reading.It's not worthwhile at all!