根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。

The number of adults who smoke in the UK has fallen in recent years. Smoking among children,   , is increasing. More and more young people get to depend on cigarettes, just as adults do.   Most of these young people here are      fourteen and sixteen. Smoking among teenagers is as popular now as it     20 years ago. Cigarettes still   120,000 people a year. And doctors say unless that changes, it will become one of the health     of the future.