一 Why do you choose to work in an international travel agency?一 Well, you know, English is my  . So it is my best choice.

He spent a large ___ of money on his books.

-------He says that my new car is a ____________ of money.  -------Don’t you think those words are just sour grapes? 

The environment is exactly everything that affect us in some_____.

There is no known_____for this disease but it can be______.