I remember he lives in the room __________ window faces south.
In our school, some students are active______ some are shy, yet they can be good friends with one another.
________, his idea was accepted by all the people at the meeting.
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?