1.did you
2.i didnt go
3.what did u have for breakfast
4.i bought
5.i didnt do
Did you go to school yesterday?
I didn't go to school.
What did you have for breakfast?
I bought a lot of books last week.
I didn't do my homework yesterday.
Объяснение:
Чтобы образовать Past Simple, нужно использовать «вторую форму» глагола.
Для отрицательных и вопросительных предложений нужно использовать вс глагол did в сочетании с инфинитивом.