The house smells as if it hasn' t been lived in for years.
.______the zoologists tried to prove was that the photo of the South China Tiger had been staged or technologically dealt with.
.It is______the customers’ needs that has made chain stores so popular in big cities in China.
.Out of the crowded bus______,who was dressed in a black suit and waved to a woman.
.By the time he comes back, I’m sure we ________ all these rooms of the lab. Therefore, he doesn’t have to return.
.________ their son away to college, the couple got more room in the house.