Поставьте следующие предложения в вопросительную и отрицательную форму.

1. I was having dinner when you rang me up.
2. His mother was making supper in the kitchen when I came in.
3. Y our friends were smoking in the corridor when we saw them.
4. I’ll be meeting my old friends in Kiev soon.

I was not having ...His mother was not making...Your friend were not smoking...I'll be not meeting...