The collapse of the World Trade Centre  has put US economy in a difficult  ___________.

.The Flight Company _________ its costomers top-quality service.

.—I really don’t know whether I can be admitted to dream university in a month.  —________. Everything is possible. 

Don’t forget to bring a dictionary next class. ___. I didn’t catch what you said.

  Our football team led ______ one point, but towards the end of the game, their team scored and the game ended ______ a tie.