1. Mary didn't write a letter yesterday. Did Mary write a letter yesterday? 2. We didn't visit our friends two days ago. Did we visit our friends two days ago? 3. Мy mother didn't make a tasty cake а week ago. Did my/your mother make a tasty cake a week ago?
1. Mary didn't write a letter yesterday.
Did Mary write a letter yesterday?
2. We didn't visit our friends two days ago.
Did we visit our friends two days ago?
3. My mother didn't make a tasty cake a week ago.
Did my/your mother make a tasty cake a week ago?