________ a man's age, he can reduce it several years by wearing a confident smile.
Robert is said ______ abroad, but I don’t know which country he studied in.
I can remember very few ______ when he had to cancel his plans because of poor health.
He hurried to the booking office only ______ that all the tickets had been sold out.
They are just college graduates and don’t realize _____ to start and run a company.
— Let’s have a game of tennis; the loser has to treat the other to an ice-cream. — ________.