1. He didn't send letters to his parents
Did he send letters to his parents?
2. My brother didn't spend his summer holiday on the farm
Did your brother spend his summer holiday on the farm?
1. He sent letters to his parents.
-> He didn't send letters to his parents.
-> Did he sent letters to his parents. 2.
->. My brother didn't spend his summer holiday on a farm
->. Did my brother spend his summer holiday on a farm?
1.he didn't send to his parents
who did he send letters to?
2.my brother didn't spend his summer holiday on the farm
where did your brother spend his summer holiday?