-- _____is that used for?---_____ the floor.
_____ hungry you are, you shouldn’t start to eat before the whole family gather around.
By this time of next Friday, I _____ to New York by the Korean Airline.
After the flood, there were hundreds of homeless people that needed _____.
The dam will generate electricity _____ about 40 million tons of coal without causing so much air pollution.
Mencius believed that the reason why man _____ the animals is that man is good.