Many people agree that ___ knowledge of English is a must in ____ international trade today.
. Some animals are in danger, and the scientists are doing ___ they can ___ them.
. The Olympic Games in the year 2008___ in Beijing of China, which known to us all.
. If law and order _____, neither the citizen nor his family is safe.
The boy and girl each _____ their own toys.
He is, however, one of those restless people who never ___ content with their present environment.