It is a truth universally ______ that a single and rich man must be in want of a wife.

The audience were ______ by his _______ performance on the stage. 

-What’s the chance of there _____an election this year?- I have no idea.

The maker of the popular game Angry Birds announced on Tuesday that it would open its first overseas operation in Shanghai, ______ a clear step to further enter the booming Chinese market. 

—The police have caught the murderer.　　   —Yes, and he admitted ________ his boss on a rainy night seven years ago.