It is said that he is focusing on another book on space exploration. When will it _____?
—When did it begin to snow? —It started ____ the night.
He was fired ____his carelessness and laziness.
Shortly after the book Uncle Tom's Cabin________, the Civil War of America________.
—When will the game begin? —It will begin later than usual _________ 15 minutes.
Some areas, ____ their severe weather conditions, are hardly populated.