Now most families have only one child _____ our country’s one-child policy.
---What time does the library open?--- ______ eight o’clock.
---I took lots of photos in Hainan.---Really? Could you show ______ to me?
—Do you know ________?—Next month.
More and more parks ________in Mentougou in five years.
It’s time for class. So stop ________, please.