My friend played football children wrote this letter the boy sang the songs отрицание и вопрос паст симпл тенс

My friend didn't play football. Did your friend play football?
Children didn't write this letter. Did children write this letter?
The boy didn't sing the songs. Did the boy sing the songs?

Отрицание:My friend didn't play football.
Вопрос:Did my friend play football?
Отрицание:Children didn't write this letter.
Вопрос:Did children write this letter.
Отрицание:The boy didn't sing the songs.
Вопрос:Did the boy sing the songs?