He was about halfway through his meal ________ a familiar voice came to his ears.[ ]

If the opportunity would ______, hold on to it and don’t let it go.

Tony is_____active boy,but he has_____unhealthylifestyle. – –Yes,youare right.

1I must return the book tothe library. I _____ it for one week.

plane crashed into a hillside five miles east of the city, _____all fourpeople on board.