In _______ 1940s the computer was made to work as _______ useful machine.
____ volcanoes now for many years, I am still amazed at their beauty as well as their potential to cause great damage.
The trade union in this industry are ____ any reduction in wages.
Children under six are not __________to school except those of extraordinary intelligence.
He was so____ a key university that he would work until late into the night.
They also agree that it is the burning of more and more fossil fuels that has resulted ____ this increase in carbon dioxide.