来自李龙海的问题
ProfessorLisaidthatlight_____fasterthansound.A.travelB.travelledC.travelsD.travelling选择哪个呢?为什么?
ProfessorLisaidthatlight_____fasterthansound.
A.travelB.travelledC.travelsD.travelling选择哪个呢?为什么?


ProfessorLisaidthatlight_____fasterthansound.A.travelB.travelledC.travelsD.travelling选择哪个呢?为什么?
ProfessorLisaidthatlight_____fasterthansound.
A.travelB.travelledC.travelsD.travelling选择哪个呢?为什么?
C.travels
虽然前面是said,过去式,但是从句的内容“光速比声速快”是一个真理,这种表示真理的从句,无论主句的时态是什么,从句都用一般现在时