What she is addicted ________ her feel better temporarily and reduces the pain of separation.
It is ______ that terrorism is a great threat to world peace.
With the worldwide oil crisis, the price of oil has been raised ______ 15%.
Part of the work is to be finished today and ______ by this weekend.
It is no longer a problem _______ the poor children in this district can go to school.
She is so _____ that she cried for days when her pet rabbit died.