词汇。
It usually takes me half an hour __________ (walk) to school.
The government should pay much attention to the __________ (increase) population.
The grand piano takes up too much __________ (room).
I think Beijing is one of the ___________ (beautiful) places in the world.
No one __________ (know) when he will be back.
There are sixty m__________ in an hour.
Today we rarely(很少) see s__________ pouring from chimney.
Women commit (犯) far fewer c__________ than men.
All of us should put r__________ into dustbin (垃圾箱) to protect the environment.
It is very impolite for you to fail to keep an a__________.