-- _____is that used for?---_____ the floor.
The picture brought back the memory of the days at Uncle Wang's in Xi'an,__________ I was treated as his own child.
__________ around Tian'anmen Square, the tourists were taken to visit the Palace Museum.
I was __________ by what he had done.
Computer and TV take up most of my spare time and __________ is spent on exercise.
—What do you think made Liz so upset?—__________ her new bike yesterday.