_________ is known to us all is that the 2012 Olympic Games will take place in London.
______ of the workers in the computer factory is about two thousand, and ______ of them are women workers.
______Browns usually go to ______ church every Sunday.
It remains ______ whether Jim will be fit enough to play in the finals.
English is ________ hard for me and Physics is ________ harder.
Hi, Doctor Wang, my chest _______ when I make a deep breath.