Нужно предложения поставить в общий вопрос, альтернативный, специальный и разделительный.
1. Our teacher knows several foreing languages.
2. He has graduated from our University last year.
3. They are working in our garden.
4. I have just read his book.
5. I took this book from my friend.

they are working in our garden, aren't they

4 have i just read his book

have i just read his book or haven't

whom book have i just read

i have just read his book, haven't i

1 does our teacher know several foreign languages?does our teacher know or don't know s.f.l?how many foreign languages does know our teacher?our teacher knows, s.f.l doesn't she?