51．短文改错

　　　As the saying goes， chances favored the prepared mind． I learned this from one of my experience．

　　　I was not chosen as member of the volleyball team of our school． Because of this， I decided to give up play volleyball． Luckily， my best friend stopped me but pointed out that it was my laziness and poor preparation which led to my failure． After that， I practiced playing volleyball on every day． When another tryout arrived， I was full prepared and tried my best． As a result， I was selected and became an important player on our school team．

From this， I am firmly convincing that， no matter when chances arrive， we were able to seize them as long as we get well prepared．