How____ is the population of the world?
It’s not good for young students to stay ____ late at night.
–Could you buy ____ drinks for us?--OK.A. a lot B. some C. any
He was born in Shanghai but____ in Beijing.A. grew up B. slept late C. took vacations
My sister started ice skating ____she was four.A. because B. when C. so
We ____ them and ____ yesterday’s singing competition.A. won, beat B. won, won C. beat, won