The physics teacher said that light much faster than sound.A. travelsB. traveledC. to tra

问题补充：

The physics teacher said that light much faster than sound.

A. travels

B. traveled

C. to travel

D. was travelling

答案：

(答案→)A. travels

B. traveled

C. to travel

D. was travelling

解析：句意：物理老师说，光比声音传播得快得多。结合语境可知下文宾语从句中描述的是客观的动作，故用一般现在时态。主语light是抽象名词，不可数，故用单数第三人称。选A。