Since you are in a public place, the noise of your radio must be ______ to a level that we all feel comfortable with.

Why do Chinese people use red paper to make Spring Festival couplets(春联)–Because they think red can ______ people good luck.

To our _______,the dog found the way back home .

Much to his surprise and delight, he found himself _____behind the football star.

joy, Della earned first the trust of herstudents and then ______of her colleagues.