The moment the 28th Olympic Games ________ open, the whole world cheered．A.declaredB.have been declaredC.have declaredD.were declared
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D解析本题考查时态和语态。句意为：“宣布第28届奥运会开始的那一刻，世界人民沸腾了。”状语从句的主语是The moment the 28th Olympic Games，谓语是declare, 故应用被动语态；主句的谓语是cheered，过去时态。