what social function does the novel serve?(discourse in fictional worlds often sheds light on power relations in society?

What do YOU think ?
While we're happy to help, we wont do all the work for you.

Just I want to know more...

Did you read it? If you did, you should be able to easily answer the questions you posted. This is for school, right? Here's more reading for you to do that might help:

SparkNotes: Holes (http://www.sparknotes.com/lit/holes/)