--May I have a talk with one of your sports reporters?　--Sorry, but all of them are out to______the main events of the day.

Linda went to the bookstore and bought_______.

--Have you _   your debt?---Yes, we worked day and night to _____.

．Elephants, which are the largest mammals on the earth, have almost no natural enemies ______ human beings.

—______are you going to be after graduation?—I want to go to______sea.