We must be aware of the dangers of smoking. It is harmful to us in various ways. It causes various diseases a blood pressure, heart attack, bronchitis, cancer, etc. b it pollutes air. c smoking causes harm to d the smokers e the non-smokers who remain by them. f we should give up smoking. g it is h great an addiction to get rid of. i nothing is impossible for us. j we are determined to give up it, we can certainly do it.