Smoking is a very bad habit. First of all, Cigarettes are expensive. Smokers have to      a lot of money buying them. That is a     (浪费) of money. Smoking is bad for smokers’ h  . It may be responsible for many d    . Even worse, it is harmful to people    them. It is said that smoking is one of the ways to   (引起) cancer. Second, there can be fires     can result in a great loss of life and property because of a smoker’s (粗心).    , we are teenagers and have no income. We have no right to do that. It will be even worse if we f  into bad habits.