Space is often referred to as the final frontier, as the only realm of which humankind has still to gain substantial understanding, yet the ocean is also another vast area about which our knowledge is _____.

The author engages this issue from diverse perspectives, supports his arguments with many examples, and manages to avoid antagonizing others in dealing with a very _____ subject.

​Even before she went to art school, Veronica found the standard design categories _____: she didn’t understand why designing buildings and designing tables should require different sensibilities.

His premiership, seemingly cast-iron year ago, is now so vulnerable that even a good day at the office does no more than buy him a few weeks of _____ from rebels within his own party.

For almost two centuries, the German island of Sylt has offered various therapies for every conceivable (i)_____ from broken bones to liver complaints. The local mud, saltwater, thermal pools, and spas have been deemed (ii)_____ by the German medical system, which (iii)_____ some of these treatments. Consequently, the treatments are widely used.

​As Ellen Donkin explains, in eighteenth-century England, writing plays (i)_____ women. Even when the (ii)_____ meant that playwriting did not bring personal fame, the work nevertheless enabled them to present their own views to the public and offered the possibility of acquiring capital.

Due to the extraordinary circumstances, British business owners found themselves in a (i)_____ position during the Second World War, forced to accept regular interference from government and to acquiesce to (ii)_____ role for labor unions in negotiating the terms and conditions of employment.

Scholarly works on detective stories often begin with (i)_____, suggesting that there is something vaguely wrong with adults who spend their time reading such fiction and certainly something (ii)_____ those who devote energy to its analysis.

Apparently, advanced tortoises evolved multiple times: the high-domed shells and columnar, elephantine feet of current forms are specializations for terrestrial life that evolved _____ on each continent.

Politicians who invoke the founders of the United States in support of their views seem to imply that the founders consistently concurred in their own views when in reality they were a highly _____ group of thinkers.