Как поставить вопрос к этим предложениям в форме past simple they started work at nine oclock this morningthe pupils understood the very well. his brother went to Kiev every year. my aunt grew beatiful roses.

They started work at nine o'clock this morning. - Did they start work at nine o'clock this morning? When did they start work?

The pupils understood that very well. - Did the pupils understand that very well?

His brother went to Kiev every year. - Did his brother go to Kiev every year? Where did his brother go every year?

My aunt grew beautiful roses. - Did your aunt grow beautiful roses? What did your aunt grow?

Вопросительная форма Past Simple образуются с помощью вспомогательного глагола did (который ставиться перед подлежащим) и смыслового глагола в форме инфинитива без to.