Question

Which form of verb is used in simpl past interrogative sentense?

Answer 1

In simple past 2nd form of verb is used
In negative sentence 2nd form of verb changes to 1st form with the addition of Did not
In interogative sentence did is placed at the start of the sentence and 1st form of verb is used.

Example.
SIMPLE
He gave me a cup of coffee.

NEGATIVE
He didn't give me a cup of coffee.

INTERROGATIVE
Did he give me a cup of coffee?
Give =1st form of verb
did is placed at the start.