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The earliest films in the world were silent, because the equipment for sound to

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The earliest films in the world were silent, because the equipment for sound to

The earliest films in the world were silent, because the equipment for _____ sound to films had not been developed.

[    ]

A. adding   B. add   C. added   D. having added

试题答案

答案：A

标签：wereworldsilentequipmentbecause

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