Have you really realized the role computers have ____in the daily life?
Between the two parts of the concert is an interval, __ the audience can buy ice-cream.
The population of China___ to many times what it was in 1949, and most of its population ___ farmers.
Was it in 1969 ____ the American astronaut succeeded ____ landing on the moon?
--This is the first time I ____ pictures with my own camera.--It’s time that you ___ a picture of me.
If we ___ the other road, we might have arrived here in time for meeting.