1) We've already had lunch.
2) They have begun painting the living room.
3) He has never ridden a motorbike before.
4) She has finally come.
5) Have we ever met?
6) Where have we put the car keys?
7) I'm sorry, I'm so tired. I haven't slept.
8) You have bought a lot of clothes recently.
9) Have you chosen your university?
10) Why has John already left? (leave)
