Lessons in Chemistry Class..

Chemistry lessons nw..i can concentrate..previously i wasn't concentrating due to distraction...i'm not blaming anyone for this distraction but myself..My friends are very supportive they teach me or share with their notes...eg cheryl she thought me how to deal with mole questions....other eg will be shafiq and shi jie they also help me...shi jie brings his external chemistry book(guide book)we can also use the answers from ther to answer questions...i find it very useful owrking with them and the book...