Написать предложения в вопросительной, а затем в отрицательной форме: 1.i have already been working at my report for three hours. 2.i have always wanted to go to london. 3.he was writing a letter at 5 o`clock yesterday.

1.have I been already working at my report for three hours? How long have I already working at my report? I haven't been working at my report for three hours
2.have I always wanted to go to London? Where have I always wanted to go? I have not always wanted to go to London
3. Was he writing a letter at 5 o`clock yesterday? What was he writing at 5 'clock? He was not writing a letter at 5 o'clock yesterday