In 1908, the Irish explorer Earnest Shackleton was on the point of reaching the South Pole
when he decided to turn back.
A. The Irish explorer Earnest Shackleton couldn’t see the point of reaching the South Pole in 1908,
so he chose to go back.
B. In 1908, Earnest Shackleton, who was an explorer from Ireland, reached the South Pole just when
he was deciding to return.
C. At the point when the Irish explorer Earnest Shackleton thought about turning around, he was
on his way to the South Pole.
D. Earnest Shackleton, who was an Irish explorer, came close to the South Pole in 1908, but then
he made up his mind to go back.