Раскройте скобки, чтобы получить Present Perfect или Past Simple в отрицательной форме. I … (not/ do) this exercise before.

I … (not/ do) this exercise yesterday.

We … (not/ go) to school since the first form. .

We … (not/ go) to school yesterday.

You … ( not/ see) a horse last week.

You … (never/ see) a horse.

He … (not /say) that yet.

He … (say) that a minute ago.

They … (not/ have) breakfast yet.

They … ( not/have) breakfast an hour ago.

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