I can't go out; I haven't finished my report ________. (I am still working on it)
yet
They have ________ eaten dinner, so they aren't hungry. (They finished eating recently)
just
My brother has ________ ridden a horse in his life. (A fact about his lack of experience)
never
We have ________ booked our tickets for the vacation. (The planning was done at an unspecified time in the past)
already
Has the manager arrived at the office ________? (We are waiting for her and want to know if she is here now)
yet
I have ________ missed a class this semester. (I have a perfect attendance)
never
He has ________ called you three times! (He is frustrated because he called very recently)
just
They haven't started the project ________. (They are late and it's not started)
yet
We have ________ seen that new movie. (We saw it at an unspecified moment in the past, so we don't want to watch it again)
already
Have you ________ been to a famous concert? (A question about life experience)
ever
She has ________ finished her lunch. (She finished it a very short time ago)
just
