AIDS control and prevention is a      to China as well as the whole world.

It makes no ________which road you take, both lead to the city.

The Chinese Central Weather Station can forecast a sandstorm some weeks before it arrives in
Beijing, but the _____ of the storm sometimes surprises people.

They have an _____ to travel abroad.  

— He says that my new car is a ___ of money.     
— Don't you think those words are just sour grapes?

Used to TV shows, where everything is quick and entertaining, many people do not have the ___ to
read a book that requires thinking.

-He must be from Northeast China,  which I can tell from his_____ .  
-It may not be true, because some people can speak several_____.