You / buy the tickets? (yet)
Have you bought the tickets yet?
Eat breakfast? (yet)
Have you eaten breakfast yet?
I / not / clean my room (yet)
I haven’t cleaned my room yet.
You / pack your bag? (yet)
Have you packed your bag yet?
Finish your homework (just)
I have just finished my homework.
I / just / talk to her
I have just talked to her.
They / not / finish lunch (yet)
They haven’t finished lunch yet.
They / arrive (just)
They have just arrived.
We / just / see that movie
We have just seen that movie.
He / just / start his new job
He has just started his new job.
She / not / call / me (yet)
She hasn’t called me yet.