Преобразуйте предложения в общий вопрос и вопрос-хвостик. 1. Every person wants to choose the right profession. 2. Most teenagers are worried about the final exams and career choice. 3. They use electric arc or gas torch. 4. They work in many industries. 5. It can be dangerous to work without proper precautions.

Living in the 12th century is an interesting idea. That may help us to understand peoples life in this century.
On the one hand, I'd like to live in the 12th century,because there's no computers,fresh air and it's easier to live there with knowledge that we have now.
On the other hand,I wouldn't like to live in this century,because there's no sanitation,and a lot of different diseases .
Anyway,it'll be interesting to live in this century,but only for a few days. Only to feel and see how people were living in the past.

1) Do you know who I am? Yes, we have met once before. - Знаете ли вы, кто я? Да, мы встречались один раз раньше (однажды)
2) My friend sent 3 letters but neither of them arrived. Мой друг отправил 3 письма, но ни одно из них не пришло.
3) My father is a seaman. And what does your father do? Мой отец моряк. А чем занимается твой отец?
4) For many years science has received social subversions.
5) Mary is very busy now. she is working out a new programme. Мария очень занят сейчас. Она занимается разработкой новой программы.
6) My wife has own car but she uses it rarely. У моей жены есть собственный автомобиль, но она редко им пользуется.
7) John is a great pianist. Do you know since when he has been playing it? Джон великий пианист. Вы знаете его все время как он играет?
8) Are you looking for anything now? Вы ищете что-то?