---- ______ do you exercise? ---- Twice a week. A. How much B. How long C. How often
—Did you know ______ just now? —Their plane didn't take off on time because of the thick fog.
Do you know where Jimmy is? I ______ him for such a long time.
—How did the writer win the prize? —He worked day and night for two years. ______ . he succeeded.
—Which of the two new books do you like better? —I like ______ of them, because they're not useful to me.
Are you sure the news ______ you received from the Internet is true?