Present Perfect or Past Simple

I (not to eat) candy floss at the funfair today.

We (not yet to solve) the problem.

I never (to be) to Washington.

It (to be) very cold last winter.

Mark (not to eat) candies yesterday.

You ever (to be) to New York?

At last I (to translate) this article: now I shall have a little rest.

When you (to meet) him?

Mary just (to come) to the party.

My friends (to be) in this summer camp last year.