one or perhaps more pages missing.A.is B are C has been D have been为什么啊

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one or perhaps more pages missing.A.is B are C has been D have been为什么啊

one or perhaps more pages missing.A.is B are C has been D have been为什么啊
one or perhaps more pages missing.A.is B are C has been D have been
为什么啊

one or perhaps more pages missing.A.is B are C has been D have been为什么啊
选D.
one or more+名词,谓语动词的形式由more后面的名词单复数决定 我们习惯上称它为就近原则,离着谁近由谁决定

选D
就近原则 要用复数 其实 b选项也可以 但是一般什么东西不见了 都要用完成时

选D,就近原则,所以是复数,对现在有影响所以用完成时