5, Nonsmokers often breathe the smoke from other people's cigarettes called secondhand smoking
6, People is becoming aware of danger from secondhand smoke
7, As a result, they can pass the laws which prohibit people from smoking in public places
8, Besides, the governments tend to put taxes cigarettes so as to discourage people from smoking
9, With concerted efforts made by the authority and non-smoker, we can look forward to the world without smoking