To meet — met — met to see —saw — seen

Âîïðîñèòåëüíàÿ ôîðìà äëÿ ïðàâèëüíûõ è íåïðàâèëü­íûõ ãëàãîëîâ â Past Indefinite îáðàçóåòñÿ ñ ïîìîùüþ âñïîìîãàòåëüíîãî ãëàãîëà did:

— Did you invite them to the conference room9

- Yes, I did./ No, I didn't.

— Did he/ she invite them to the conference room?

- Yes, he/she did/No, he/she didn't.

— Did they meet in the conference room?

- Yes, they did./No, they didn't

Îòðèöàòåëüíàÿ ôîðìà îáðàçóåòñÿ ñ ïîìîùüþ âñïîìî­ãàòåëüíîãî ãëàãîëà â îòðèöàòåëüíîé ôîðìå did not {didn't):

Ididn't invite them to the conference room.

He/ Shedidn't invite them to the conference room.

Wedidn't meet in the conference room.

Theydidn't go to the conference room.