Придумать 4 вопроса по past perfect : общий , альтернативный и т.д. по предложению : when my sister came home our mother had cooked dinner, hadn't she?
Who came home when our mother had cooked dinner? What had our mother done when my sister came home? What had our mother cooked when my sister came home? When did my sister come home? Had our mother cooked dinner or breakfast when my sister came home? Had our mother cooked dinner when my sister came home?
What had our mother done when my sister came home?
What had our mother cooked when my sister came home?
When did my sister come home?
Had our mother cooked dinner or breakfast when my sister came home?
Had our mother cooked dinner when my sister came home?