CDCCB
81.________ light travels faster than sound,lightning appear
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light_____(travel)faster than sound
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Light travels much faster than sound.
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Light travel faster than sound.=Sound ___ travel so ___ as l
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Light travels faster than sound.（同义句）
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The teacher said light travels faster than sound___
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____is well-known is ____light travels faster than sound.
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As we all know,light (travel)faster than sound
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Light travels faster than ----- 是noise还是sound,为什么
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The teacher told us that light __(travel) faster than sound.
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It's known to all that___light travels faster than__sound.