My mother didn't cook breakfast yesterday. Did your mother cook breakfast yesterday?Jim didn't go to the sea last summer. Did Jim go to the sea last summer? We weren't at school yesterday? Were you at school yesterday?She wasn't at her granny's house on weekend. Was she at her granny's house on weekend?Yesterday she didn't make a salad. Did she make a salad yesterday? I didn't hear a noise. It wasn't my cat. Did you hear a noise? Was it your cat? Last Sunday Mary didn't get up at 10 o'clock. Did Mary get up at 10 o'clock last Sunday?She didn't see Mary at school last week. Did she see Mary at school last week? He can't swim when he was six. Can he swim when he was six?