Is there a way to import a pdf file into pages

I am trying to fill out an qpplicatipn downloaded from the web in pdf format and i cant open it or import it inpages directly but only to either good reader or downloads hd or mailer but none of these programs have editing or writing features they juwt store it. I need to somehow fill out the applicstion in there. Is there a way? Or can i somehow donvert it to doc vis some app and import it to pages than save it pr email it back as pdf?