Мне это на зачет поставьте предложения вопросительную и отрицательную форму they boys are doing their home work ann is taking her examination now he was writing a letter to his sister when i came present

The boys are not doing their homework.  Are the boys doing their homework?

Ann is not talking her examination now. Is Ann talking her examination now?

He was not writing the letter to his sister when i came. Was he writing the letter to his sister when i came?

They boys are not doing their home work.

Are the boys doing their home work?

Ann is not taking her examination now.

Is Ann taking her examination now?

He wasn't writing a letter to his sister when I came.

Was he writing a letter to his sister when I came?