完型填空

When are you an adult？

　　When do you think you are an adult? Maybe different 　　1　　 have different ideas．

　　Now let's see what some American teenagers say．

　　Sam：In 　　2　　 idea, you are an adult at the 　　3　　 of 18．That's when you can vote．You can help to 　　4　　 who rules the whole country．That's also a grown-up does! My grandfather couldn't vote 　　5　　 he was 21．They changed it to 18 in 1971．

　　Jenny：I don't 　　6　　 it's hard to say．I can drive a car at 16, can't I? When you have a driver's license, you can 　　7　　 it to people to tell them your age for all kinds of things．　　8　　 sixteen must be the age when you change from a 　　9　　 person to an adult．Because you can tell others you are not a 　　10　　 any more．

　　Suzie：Well, I think there is 　　11　　 wrong with American laws for when young people can 　　12　　 things．I can vote at 18 and drive at 16．So you would think 　　13　　 18 is a grown-up, even though16 isn't．But then I can't drink wine until I'm 21! If I'm 　　14　　 an adult at 18, how can people stop me from 　　15　　 a cup of beer in a bar?