---- Do you know how to prevent (预防) the H7N9 flu?---- You can ask the doctor for some ________.
What ____ sad news! We can’t get the movie tickets.
—John isn’t happy today. Let’s go and ____. —Good idea.
Yesterday his brother gave him _____.
—_______ can I keep the books? —Two weeks.
I didn’t know it _______ you told me.