摘要：( )Our teacher told us that light much faster than sound. A.traveled B.travels C.is traveling D.was traveling
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Our teacher told us that light _____ much faster than sound.
A.traveled B.travels C.is traveling D.was traveling
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Our teacher told us that light _______ much faster than sound.
[ ]
A. traveled
B. travels
C. is traveling
D. was traveling
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B. travels
C. is traveling
D. was traveling