Read the following passage and mark letter A, B, C, or D to indicate the correct word that best completes each blank.

Sociologists have been ___(1)___ out research into the social pressures of being a teenager. Many adolescents are unhappy at school because they find it difficult to make friends. This stress can bring on illness or result in poor grades. They may also worry about their appearance and often feel ___(2)___ enormous pressure to dress, talk and behave the same as others. This phenomenon is called peer pressure, and it is very common in today’s society. Advertising ___(3)___ a lot to the social pressures teenagers feel. Advertisers know how important it is to feel that you belong to a group when you are in your teens, so they try to ___(4)___ teenagers that certain products will make them popular with their classmates. Sadly, many teenagers act irresponsibly and even do dangerous things just to make others accept them. Peer pressure is often the reason for teenage smoking, drug abuse or dangerous driving. Teenagers need to learn to say “no” to social pressure and to find friends ___(5)___ they can talk things over with when they have a problem.