It is _______ that he has been addicted to the drugs and has difficulty quitting it.
Books of this kind ______ popular with the pre-school children.
--Are you satisfied with his reply? --Not at all. It couldn’t have been ______ .
As a result of the snowstorm, the village was ____ from the outside world for more than a week.
Jimmy is a true hero, ______ always thinks more of others than of himself.
Tens of thousands of people starved to _____ when the two countries were at war.