Образуйте отрицательную и вопросительную форму предложений 1 . he is a student . 2. he was a pupil. 3.she will be a student next year . 4. they are at home now . 5 we were ill last week . 6. i shall be at work tomorrow. 7 i am a doctor. 8. my friend is an engineer. 9. there were a lot of books in his room . 10 all my family wi be at hone tomorrow