Place this code inside your form element input code.
value="<?php echo $_GET['answer'];?>"
<input name="answer" id="item1_text_1" type="text" maxlenght="254" placeholder="" value="<?php echo $_GET['answer'];?>" />
!-- Start of FORM -->
<form method="get" action="myformname/myformname.html">
Answer<input type="text" name="answer" value="">
<input type="submit" name="" value="submit">
</form>
<!-- End of FORM -->
Here's how links are setup.
<a href="getvar_url/getvar_url.html?answer=Cool">Cool</a>