_________ is known to us all is that the 2008 Olympic Games will take place in Beijing.
Would you please ______ the paper for me and see if there are any obvious mistakes?
Both___ _ and ____ _ laughter do harm to your health.
We ______certain livings as birds not because they have long legs or short legs,but because they all have feathers.
If no one ______ a coat with red buttons on it,I’ll have to keep it or send it to the Lost and Found.
The sports meet, originally due to be held last Friday, was finally _____ because of the bad weather.