Помогите пожалуйста с предложениями в Past Simple , их нужно сделать +, ? , -. We (read a book ) yesterday. She ( help my brother) 3 days ago/ He (draw a picture) last month. They(write a letter) last week.

1.We read a book yesterday.  We did not read a book yesterday Did we read a book yesterday? 2.She helped my brother 3 days ago She did not help my brother 3 days ago  Did she help my brother 3 days ago? 3.He drew a picture las month. He did not draw a picture last month Did he draw a picture last month? 4. They wrote a letter last week They did not write a letter last week Did they write a letter last week?