Плюсы:
1. возможность быть всегда на связи
2. возможность слушать музыку
3. возможность выхода в Интернет
4. возможность повысить имидж (ах, навороченная модель)
минусы:
1. вредное высокочастотное излучение
2. трата денег на трафик
<span>3. развитие зависимости от СМС, игр и т. п. </span>
Я не понял, что изображено на последней картинке упражнения 1,
но вот ответы на остальные вопросы:
1. don't have to2. mustn't
3. should4. mustn't
5. can6. don't have to
7. should have brought8. can't have seen
9. must have broken
10. should have come
I avoid doing my chores
My parents consider me to be an excellent student
I would love to go abroad
I'm not good at making new friends
We've decided to take no further action
I suggest that he's lying
We haven't gone an exhibition for six months.
My sister has worked in Geneva since 2009.
They haven't listened to the radio for a long time.
I haven't seen her since 2012.
He has wanted to go to Brazil since last year.