Christina,
Since Forms can be used on more than one page, you cannot report on Form fill outs using the Report tool. You must use a Smart List to say "Filled Out Form IS "X"" and leave the other options blank.
But it's pointless to do that because it is the CTA and page content that induce people to fill out the form.
You can create a New Landing Page Report and select the range of pages you wish to report on using the check box filter under Setup. You should also be able to constrain this report using a Smart List or a Smart Column to see the types of leads filling out these page combinations.
Generally, the URL of the page is not shown here. If you are having trouble understanding the page names, you should reconsider your
page naming scheme.