根据短文大意选择方框内的单词并用其恰当的形式填空(每空填一词) 

so     ill      time     bring    must

    Now more and more people get to know the importance of doing sports. It can  fun to us and it's good for our health.  what should we do?

    First, we should choose (选择) our favorite ones from different kinds of sports. The sports should be right for us. Second, we  warm up (热身) before exercising. Third, as a beginner, you had better have an exercise plan. For example, how long are you going to exercise each time? How many  a week? If you're a lover of sports, it's important to know this. Last, you had better not exercise if you fall , or it will be very dangerous.