Step 10 of the Voxforge Tutorial and Howto use a tree.hed script that contain "questions" are specific to the English language, and therefore will not work with other languages.

For more information on how to create a tree.hed file for a new language, see the following links:

• nsh's overview of how to create clustered triphone "questions" for Sphinx and HTK for new languages
• Ticket #153 - htk error on step 10, and a related thread in the forums
  
• my post on this Thread on "Error when compiling model" where I discuss Creating clustered triphone "questions"

See also the HTK manual. 

Theoretically, you should be able to automatically create questions using the CMU Robust Group Sphinx Tutorial.  These would be in Sphinx format, but could be used as a starting point for the creation of HTK questions for a tree.hed script.