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

When delivering a speech, you should adjust your language to the age of your ______ audience.

It is obvious that this anti-smoking ____ is mainly aimed at young teenagers．

一Tell us, Mark ,what is the ____ of the American Civil War?一 Well, is it because the black slaves wanted freedom?

I suggested that we break off for tea in a(n) _____to reduce nervousness