20 ! поставьте предложения в отрицательную и вопросительную форму и переведите: i've bought many products today we have discussed conditions at the conference we have met our students in the college pete has bought a new leather jacket this summer his sister has just come back from sochi my friend have been to the black sea this summer
2 we have not
3 we have not
4 his sister has not...
5 my friend have not