You can eat lots of fruit and vegetable every day and exercise regularly,but your health is still

You can eat lots of fruit and vegetable every day and exercise regularly,but your health is still
in great danger if you smoke.We know t___smoking is bad for us,but not everyone gives it e___ attention.Here we have some serious facts about smoling.In the US,smoking c___ 20% of the death,killing more than 400,000 people each year.Smoking reduces life expectancy by 7 to 8 years.Each cigarette shoutens a smoker's life by about 5 m____.90% of lung cancer cases are due to smoking.Almost 1 in 5 heavy smokers will d___ of lung cancer