Past simple +
We (see) Mary on Monday
We saw Mary on Monday
We went to the beach
We didn't go to the beach
see
saw
He read a book. what?
What did he read?
He (give) me a present
He GAVE me a present
I called an ambulance.
I didn't call an ambulance.
go
went
She went to the gym. Where?
Where did she go?
Katie (finish) her homework at 4:30.
FINISHED
We danced a lot at the party.
We didn't dance at the party.
know
knew
They played tennis last weekend. When?
When did they play tennis?
Sally and I (be) friends
Sally and I WERE friends
Tim was at school
Tim wasn't at school
be
was/were
She stayed at a hotel last night. Where?
Where did she stay last night?