"Conversation Lessons" supplemental material

[topan]

I have recently begun using the text entitled "Conversation Lessons"
by Ron Martinez. So far things seem to be going well as the students
are exposed to conversational phrases that are quite common and
useful. However, some of the exercises are a bit too difficult for
some of my students and some of the chapters come up a bit short in terms of giving the students a chance to practice the new phrases. I have trying to track down any supplemental
activities or worksheets for the text but haven't had much luck! I
have been making some of my own but I was wondering if anyone had a
lead on such materials? Thanks for any help!!

thomas in japan