The government is doing whatever they can to ____ the bird flu from spreading.
E-mail , as well as cellphones, _____an important part in daily communication.
This kind of stories instructive while stories of that kind harmful to children.
We have reached a stage _________we have almost no rights at all.
The little boy_____be very naughty, but he is very lovely.
he referred to in his article was unknown to the general reader.