根据课文填空。 请控制自己不要看课文,以测试自己对课文的掌握情况。 Taekwondo is my life... If you are not ___1____ about what you do , then __2__ you do it?When i was little, I ____3__ sport a bit boring.Then I started Taekwondo __4___i was about eight.Now i"m a black __5____----I'm really __6___ because i've already won two international ___7___---- not __8___ for a seventeen-year-old! Taekwondo is ___9__ very popular and i've recently _10___ lots of people ___11__ all __12__ the world. Some people call it a __13___, but really it's much __14__ than that...Our __15___ teach us physical ___16___,like the kicks,but i have also learned a lot about __17___ and ___18__ for other people, i think that's what makes it so __19____. I can't __20___ my life __21___ Taekwondo .