16 A lot of teenagers develop acne.
17 This novel is likely to lead teenagers astray.
18 A stagnant economy combined with a surge in the number of teenagers is likely to have contributed to rising crime levels in the US.
19 There is considerable pressure on teenagers to conform.
20 In this program the teenagers and the adults make the rules together.
21 Many parents find it hard to relate to their children when they are teenagers.
22 It's pathetic to see fifty-year-old rock stars prancing around on stage as if they were still teenagers.
23 By indulging in casual sex, many teenagers could be signing their own death warrants.
24 Some teenagers are just a nuisance, but at the other end of the scale there are kids who pose a real threat.
25 She will pitch her speech to the teenagers in the audience.
26 Before the most recent change, the social-media site did a decent job of protecting privacy through obscurity, especially for teenagers.
27 According to the army, the teenager said he was on a "suicide mission" for the movement.
28 The novel tells the story of a teenager driven to despair by the hypocrisy of the adult world.
29 Consider the problems of the teenager contra those of the adult.
30 There is growing concern over the safety of the missing teenager.