1. She was in the cinema three months ago.
Where was she three months ago?
She wasn't in the cinema three months ago.
2.I was swimming in the sea last summer.
What were you doing last summer?
I wasn't swimming in the sea last summer
3.My sister visited museum last Friday.
What did she visit last Friday?
My sister didn't visit museum last friday.
4. I saw my friend yesterday.
When did you see your friend?
I didn't see my friend yesterday
5. In 1996 they were ten.
How old were they in 1996?
In 1996 they weren't ten.