You can add Surveys/Forms to a landing page by following these steps:
First create the survey you want to add to the page.
Then create a new Landing Page (ensure the page type is set to landing page)
Within your HTML Template or HTML of the page, you need to include this tag:
{@survey:@}
4. Then you can find the survey to assign towards the bottom.
5. That's it, your survey will auto-populate in that section.