-- _____is that used for?---_____ the floor.
Though______money, his parents managed to send him to university
A new food market has been built for the _____of the residents.
Entering the room, I found Mary ______at the desk and _____a letter.
John received an invitation to dinner, and with his work______,he gladly accepted it.
______is known to us all is that the 2008 Olympic Games will take place in Beijing.