Columbus Day（ ）on the twelfth of October because on that day in 1492, Christopher Columbus first landed in America.
A.正确答案Ais celebrated
B.celebrates
C.celebrating
D.was celebrated
Columbus Day（ ）on the twelfth of October because on that day in 1492, Christopher Columbus first landed in America.
Columbus Day（ ）on the twelfth of October because on that day in 1492, Christopher Columbus first landed in America.
A.正确答案Ais celebrated
B.celebrates
C.celebrating
D.was celebrated
