One day we will manage to _____the world ______this terrible disease.

Only when I left my’ parents for Italy___________how much I loved them．

After eight hours’ hard work, the firemen the big fire at last.

Ten passengers ______ the plane, which crashed into the urban area last night because of the thick fog,are reported to have survived the crash, but the news has not been ______ yet by the officials in charge. [ ]

How often are the Olympic Games held – fouryears.