问题补充:
Our physics teacher told us that light faster than sound.
A. travel
B. travels
C. is travelling
D. has travelled
答案:
A. travel
(答案→)B. travels
C. is travelling
D. has travelled
解析:本题考查的是宾语从句,一是考虑到语序应该为陈述句语序,二是考查的是从句的时态要与主句的时态一致,但是客观现实,要用一般现在时,故选B