Where were you last weekend?
I was at the campsite.
Were they in the countryside last weekend?
Yes, they were.
Was Mary in Tokyo last summer?
Yes, she was.
Was he in Sydney last summer?
Yes, he was.
Where was she last summer?
She was in London.
Was she in Tokyo last summer?
No, she wasn't. She was in London.
Where were you last summer?
I was on the beach.
Were you at the campsite last weekend?
No, I wasn't. I was at home.
Where were they last weekend?
They were at the zoo.
Where was he last summer?
He was in Bangkok.