Картинка: https://i. imgur. com/qPrF9PB. jpg

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1. I have seen a ghost!

2. We have finished the exercise.

3. I have read two books this week.

4. They have written an email.

5. You have helped me a lot.

6. My parents have given me some pocket money.

7. He has done his homework.

8. She has had some difficult exams.

teenagers wear diferrent clothes. their style is depend of their subculture. for example hippies wear indian style dresses and flower in their head. punks wear clothes that shok their parents. ravers wears casual, comfortable clothes for free dancing! that's all!