Did Mr Morton walk down the street?
Yes, he did.
No, he didn't.
No, he doesn't.

Did he talk to his cat?
No, he doesn't.
No, he didn't.
Yes, he did.

Did he know a girl?
Yes, he does.
Yes, he did.
Yes, he is.

What did he write?
A letter.
A poem.
An article.

What did he do in her house?
He sat on the porch and rocked.
He sat in the garden.
He stood up.

Did they get married?
Yes, they do.
Yes, they did.
Yes, they are.