There is nothing wrong with using a credit card for purchases. It’s more _______ than carrying loads of cash.
—Alice, you look puzzled.Haven’t you understood it? —Yes.I _of another problem just now.
—I can’t imagine Phelps was caught smoking on campus! —_______.
—What are you doing, John? Why stop? —To be on the safe side, we’d fill up the car now for we _______ run out of gas on the way.
Bill Gates has created a wonderful “window” ______ people can surf the Internet freely.
—What do you think of the film 2012? —Well, it’s good.At least it’s ______the one I saw last time with Jean.