his mother was making supper in the kitchen when I came in Поставьте…

Общий вопрос: Was his mother making supper in the kitchen when I came in? Специальный: What was his mother making in the kitchen when I came in? Альтернативный: Was his mother making supper or breakfast in the kitchen when I came in? Разделительный: His mother was making supper in the kitchen when I came in, wasn't she?