2. поставьте предложения в отрицательную и вопросительную формы he has a computer at the office. they have a brake now. we have our english lessons two times a week. i have a sister.

He has a computer at the office. He don't have a computer at the office. Do he has a computer at the office?
They have a break now. They don't have a break now. Do they have a break now?
We have our English lessons two times a week. We don't have our English lessons two times a week. Do we have our English lessons two times a week? 
I have a sister. I don't have a sister. Do I have a sister?
все тут правильно)