According to the national population survey concluded recently, Florida is home to the largest population of people aged 65 and older, and this group ______ over 17 percent of the state’s population.
Do you think everything _______was true?
It was Tom and his friends that________for the serious accidents.
He was reading a very interesting story, completely_______himself in the story.
Whoever invented _______wheel is believed to have made ______most useful invention in _______history.
The importance of saving gas_______be stressed too much. Automobiles use up some 70 billion gallons of gas a year.