I must have been a great _____ to my parents in those hard days, for I never failed to live up to their expectations.

—I am feeling cold.—To have some hot soup will ________.

He, a Nobelist, made great ______________ to researching in this area.

Many new _____ will be opened up in the future for those with a university education.

She wasn’t a much older tennis player but he had the great ______ of experience about games.