If I had had enough money, I ___________ that car.

(3rd conditional)

Your sister would have helped you if she ___________ been so busy.

Peter would have crossed the border if he ___________ his passport.

_________ you have asked for help if there had been someone near you?

(3rd conditional)

They wouldn't have been late if they _________ the bus.

If I _________ that you were so tired, I wouldn't have visited you.