Verified answer

Positive

I have already seen this film.

We have just written a test.

My friend has always wanted to have a motorbike.

They have made a huge cake.

I have been to St Petersburg with my parents.

Negative

My parents haven't come home yet.

I have never eaten lobster.

We haven’t visited this museum yet.

He hasn't finished his project.

I haven't met any celebrities.