【2013兰州】Do you know a spaceship flies at about nineteen kilometers _______ second?
--- Don’t make any noise in the living room! My baby is sleeping. ---________.
Would you please _________ home, Tom? She didn’t catch the last bus.
We have to the questions before answering them.
The Yellow River is _________ river in China.
There _____ lots of traffic on the road, so I didn’t catch my plane on time.