---Have you been to the National Theatre? ---No, but I’ve         bought two tickets for the concert to be given this weekend.

— Would you come to our party tomorrow, Della?— I’m afraid I can’t afford the time, but thank you for the invitation _______.

A teacher must see to it that every one of his students develops        .

The happiest of people don’t ______ have the best of everything; they just make the most of everything that comes along their way.

—Thank god, you finally returned home ________. —You can never imagine how I worried about you when I was told about the terrible accident.