Даны предложения. Их нужно поставить в вопросительную и отрицательные формы. Также объясните пожалуйста, по какому правилу это делается.
1) My son was a pupil last year.
2) I was in Kiev two weeks ago.
3) His friends were at our factory yesterday.
4) My daughter was at the nursery-school last Tuesday.
5) Wednesday was his day off last week.
6) Our engineers were in Volgograd last week.
7) We were happy to see them yesterday.