СРОЧНО! ПОЖАЛУЙСТА!
Определите характер разрыва функции f в точке х0
f(x)=tgx, x0=π/2

Упр. 2. Передайте следующие предложения в Passive Voice, обращая внимание на место предлога.

E.g. We often speak about her. — She is often spoken about.

1. We thought about our friend all the time. 2. The doctor will operate on him in a week. 3. The teacher sent for the pupil's parents. 4. They looked for the newspaper everywhere. 5. Nobody slept in the bed. 6. The neighbour asked for the telegram. 7. Everybody listened to the lecturer with great attention. 8. The senior students laughed at the freshman. 9. The group spoke to the headmistress yesterday. 10. The young mothers looked after their babies with great care. 11. Nobody lived in that old house. 12. They sent for Jim and told him to prepare a report on that subject.

Озеро - Болото

Назовите как можно больше факторов, влияющих на превращение озера в болото.