I bought a dress for only 10 dollars in a sale; it was a real _________. 

The financial crisis has put the world economy in a difficult _________.

His _____today made me angry . He should do things politely.

Before graduation, we had got a lot of practical _____ by doing a part-time job in the factory and it was really ______ for all of us.

Now that taking exercise will build up your       , you should try to run in the morning.