I can never forget the day ____ we workedtogether.

My brother would like to buy a good watch but ________ was available from that shop.

Since our country has so many good table tennis players, we have to ______ the best ones to take part in the game.

Recently we held a discussion about what we shall use for power when all the oil in the world has _________

They kissed goodbye, then she________him and ran away, disappearing in the distance.