inserting XML elements in freemarker template using XPath

Question

I'm using freemarker to do some XSLT-like transformations. I've created a working template, but it's ugly (see the example). But some of the elements aren't being transfomred at all. Is there a way I can use XPath expressions to insert entire elements into the XML? For example,

<Root>
 <A>
  <B>bb</B>
  <c>cc</c>
 </A>
 <D>
etc
 </D>
</Root>

Currently this is my template:

<Root>
 <A>
  <B>${doc.Root.A.B}</B>
  <C>${doc.Root.A.C}</C>
 </A>
 <D>

etc

I tried using an XPath expression like "${doc["/Root/A"]}" but I got the error "This element with name "A" has a child element named: B". Is there a way to insert an element queried using XPath directly in the xml?