The moment the 28th Olympic Games ___open,the whole world cheered.A declared B have been declar...The moment the 28th Olympic Games ___open,the whole world cheered.A declared B have been declared C have declared D were declared （句子不用翻译,我只想知道答案是D,为什么不可以选B,A,C我知道是错的）
问题描述：
The moment the 28th Olympic Games ___open,the whole world cheered.A declared B have been declar...
The moment the 28th Olympic Games ___open,the whole world cheered.A declared B have been declared C have declared D were declared （句子不用翻译,我只想知道答案是D,为什么不可以选B,A,C我知道是错的）
答
如果是选B，选项应该是had been declared。因为是过去式。
答
从题干中，可以知道是过去时（cheered),故讲的是当时宣布开始。选D
答
观察主句的时态由cheered 可以看出,当28th olympic Games 被宣布开幕的那一时刻,观众就开始欢呼,连个动作几乎同时发生,间隔短故用一般过去时态.