1.   Most teenagers start taking drugs through boredom.

2.   Teenagers often start smoking because of peer pressure.

3.   Some teenagers had started the trouble at the club, by mouthing off all the time.

4.   Another teenager has started smoking.

5.   As sneaker-maker Nike Inc. and many others have learned, black teenagers often start fashion trends.

6.   But when black teenagers started dancing with white girls, words were exchanged and scuffles broke out.

7.   David Issa, a junior at Dunwoody High School, said some teenagers start to depend on each other too much.

8.   No one knows the full cost of families started by teenagers in Arizona.

9.   The department of Health and Human Services is pushing harder than ever before to keep teenagers from ever starting to smoke.

10.   The two teenagers started arguing.