a study has shown___(that/which/what)fitness is the key to long life,regardless of body shape or even smoking habits. Researchers discovered that people _____(who/whom/those)exercise live longer than those____(whon/who/whether) do not. It is clear_____(which/what/that) exercise means so much to our life. So,come on and take actions, from____(which/whose/who) your body can be made healthier. First,start an exercise routine. Choose____(whichever/whoever/whatever) activities you like,such as soccer,tennis, football,and basketball,______(whichever/which/that) are all fun ways to keep fit. Choose a suitable time____(when/that/if) you want to exercise. second,eat a healthy, balanced diet with lots of vegetables and fruits, and drink plenty of water every day. third, telk your family and friends____(who/that/when) you want to get fit and ask____(whether/as if/ why) they'll help. Of course, you can do it alone, but any extra support from friends or relatives is useful.