Read the following article and answer the question. Article: There is an English saying that goes,"he who laughs last,laughs the hardest."High School Musical star Zac Efron is laughing a lot these days. As a young boy,Efron was _ in school because he was always the smallest in his class and teased because he had a big space between his teeth. In sixth grade,Efron's basketball team made it to the league championships. In double overtime ,with three seconds left,he rebounded the ball and passed it--to the wrong team! They scored and his team lost the game. But history, as they say, is a thing of the past. Now at 21,Efron is one of People magazine's 100 Most Beautiful People,appears on the cover of Entertainment Weekly,Hollywood's most influential magazine,and is traveling the world promoting the third High School Musical film. Director Adam Shankman described Efron as "arguably the biggest teen star in America right now."Simply geogle"Zac Efron"and you get more than 14 million responses. Yes,it seems Efron has a lot to smile about these days. Efron was born and raised in California. He took school seriously. According to Efron, "he would go mad if he got a B and not an A in school, and that he was a class clown."It was his father who encouraged him to act. He took part in school performances and with a local theater group. He also took singing lessons. He graduated high school in 2006 and was accepted at the University of Southern California to study film. But he postponed it-why study movies when you can star in them. Now he has signed on to star in the romantic comedy Seventeen Again and to play in the remake of the hugely popular movie,Footloose.Efron is also earning more than $3 million for his role in High School Musical 3.Not bad for a 21-year-old. But Efron still remembers those bullies . "You always have to remember that bullies want to bring you down because you have something that they admire,"Efron said."Also,when you get made fun of, when people point out your weaknesses, it's an opportunity for you to rise above". Efron has risen all the way to the top of... Question: Why did Efron put off his university study? Answer:
Because he didn't want to lose the chance to star in films.