Question

ℎ

何故答えは③なんですか？

2 空所に入れる言葉として最も適切な適当なものを選びなさい。
Columbus's name appears many times on maps of the Western
Several cities in the U.S.A. are named after him, ( ) is
the Colombia River, one of the chief rivers in the U.S.A. and Canada.
Hemisphere.
X the Western Hemisphere
**)
1 which
2. it
3 as
4. that