BoB, Ivy

Well.. my bob is late.....umm... periodic functions...is not really fun for me...but my understanding to this unit is 75% out of a 100 %. Some questions is pretty to understand..but some are not... let just say some of the vocabulary use in some questions is not in my level..hahaha..well i will try to understand it...i think i just need to break the questions in parts to understand it...with DABC...Well...wish you all luck..and i will my self too....