Light_______(travel)much faster than sound.
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Light_______(travel)muchfasterthansound.Light_______(travel)muchfasterthansound.Light_______(travel)
Light_______(travel)much faster than sound.
Light_______(travel)much faster than sound.
Light_______(travel)much faster than sound.
travels,因为这是客观真理,永远用一般现在时
Light travel much faster than sound.
travels
travels