When other nine-year-old kids were playing games, she was working at a petrol station. When other teens were studying or going out, she struggled to find a place to sleep on the street. But she overcame（克服）these terrible problems to win a highly competitive scholarship（奖学金）and gain entry to Harvard University. And her amazing story has inspired a movie, “Homeless to Harvard: The Liz Murray Story”, shown in late April. Liz Murray, a 22-year-old American girl, has been writing a real-life story of willpower and determination. Liz grew up with two drug-addicted parents. Ther