B4

Many people, especially young people, wear things which express their ideas and feelings about life. If a boy has very short, almost shaven hair, people expect him to have right wing politics.
(present simple, т.к. это общее утверждение. Has для 3 лица (he, she, it ))

HAVE

B5

But boys with very long hair are thought to have left wing politics.
(present simple passive, т.к. о них думают, а не они думают)

THINK 

B6

A boy who wears a leather jacket covered in bits of metal will probably ride a motorbike.
(покрытый)

COVER

B7

The rules of fashion are not as rigid as they once were and today’s teenagers do not follow any particular trend at all.
(present simple, т.к. общееутверждение)

NOT FOLLOW

B8

But teens are very influenced by celebrities and they have a desire to buy more luxurious items.
(знаменитости)

CELEBRITY 

B9

Street styles are not created by the big fashion designers. In fact, the fashion designers often use ideas from street fashions.
(present simple passive, т.к. общее утверждение)

NOT CREATE

B10

But some leaders of British fashion have enough ideas of their own. One of them is Jean Muir, whose designs made her one of the best designers.
(степень сравнения)

GOOD