Construction of the Roman Colosseum, which was officially 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.
which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian,
officially known as the Flavian Amphitheater, begun in A.D. 69, during the reign of Vespasian, and
which was officially known as the Flavian Amphitheater, began in A.D. 69, during the reign of Vespasian, and
officially known as the Flavian Amphitheater and begun in A.D. 69, during the reign of Vespasian it
officially known as the Flavian Amphitheater, which was begun in A.D. 69, during the reign of Vespasian, and
begun过去分词不能做谓语啊,要看清楚别和began混淆了。BE都因此而错。
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