Ответ:

  1. I was tidying the cupboards while Jane was painting the ceiling in the entrance.
  2. We were enjoying a peaceful evening in the garden when it started to rain.
  3. Mum bought a comfortable sofa and then she bought some unusual lamps.
  4. I opened the gate and then the dog ran off.
  5. My phone rang while I was having a nice hot shower.
  6. John was speaking when Emily interrupted him.
  7. I stayed on the balcony while Daniel was making dinner.