Fred entered without knocking and, very out of breath, sank _______ a chair.
I ’d rather have a room of my own, ________small it is, than________a room with others.
Watching TV is_______a kind of relaxation , and it also___________our knowledge.
I have some doubt ____ his words, but _______ is no doubt that he has passed the exam.
We have every reason to believe that ______ 2012 London Olympic Games will be ______ success.
Every man in this country has the right to live where he wants to, ____ the color of his skin.