Замените действительные обороты страдательными: образец: our teacher wrote the book – the book was written by our teacher. 1. they asked us to stay a little longer. 2. people have made great progress in physics. 3. they are discussing the possibility of new negotiations. 4. people use coal for making artificial materials 5. they elected him president of the club last year.

1.They asked us to stay a little longer.  - We were asked to stay a little longer.
2. People have made great progress in physics. - The great progress was made by people.
3. They are discussing the possibility of new negotiations.  -  The possibility of new negotiations was dicsussed by them.
4.  People use coal for making artificial materials. - Coal was used by people for making artificial materials.
5. They elected him President of the Club last year. - He was elected President of the Club by them last year.