_________ is known to us all is that the 2008 Olympic Games will take place in Beijing.

The party, which had been greatly _____, was spoiled by the rude behavior of an uninvited guest.

It is said that the book _________ many events that can’t be found in other books

I think it’s important ______healthy.

What’s the low-carbon(低碳的) lifestyle like—Save energy, and produce carbon.