Construction of the Roman Colosseum, which was
offi cially known as the Flavian Amphitheater, began in
A.D. 69, during the reign of Vespasian, was completed
a decade later, during the reign of Titus, who opened
the Colosseum with a one-hundred-day cycle of
religious pageants, gladiatorial games, and
spectacles.（C）
(A) which was offi cially known as the Flavian
Amphitheater, began in A.D. 69, during the reign
of Vespasian,
(B) offi cially known as the Flavian Amphitheater,
begun in A.D. 69, during the reign of Vespasian,
and
(C) which was offi cially known as the Flavian
Amphitheater, began in A.D. 69, during the reign
of Vespasian, and
(D) offi cially known as the Flavian Amphitheater and
begun in A.D. 69, during the reign of Vespasian it
(E) offi cially known as the Flavian Amphitheater,
which was begun in A.D. 69, during the reign of
Vespasian, and
