Good lesson! Thanks for sharing it. I taught this one to my second level students today and made a few adjustments to suit my style. At the beginning, I found it helped to distinguish between advice and invitations, both of which appear in this lesson. My students found the worksheet pretty easy, but it was a good intro and everyone participated, including the lowest level students. I tried the group work approach in one class but ended up only having the same 5 or 6 students answering all the problems so I changed it to having the whole class stand. The students could sit down after they had given a suggestion for the problem. 8 problems and 40 students = 5 suggestions for each slide. It seemed to work out really well and the students were pretty impressed/excited about the board full of suggestions we had at the end of the class. At the end, I go through the slides with the answers and compare how many of the students suggestions appear on the slides. Also, I edited problem #5 from duck to chicken. Because, well, that's what it is. :)