— Did Alan enjoy seeing his old friends yesterday?— Yes, he did. He _____ his old friends for a long time.
—I'm sorry I stepped outside for a smoke. I was very tired. —There is no________for this while you are on duty.
—Would you like to go to the dinner party on Saturday? —Thank you. I'd love to,________I'll be out of town at the weekend.
—Haven't you realized the use________the used paper? —Yes, already.
Being determined is a kind of quality and that's________it takes to do anything properly.
—What do you expect Mr. Zhang to succeed in? —________.