A-A+
We see lightening (before we hear) the thunder
问题详情
We see lightening (before we hear) the thunder it (causes) because sound travels (more slowly) than (light is).
A.before we hear
B.causes
C.more slowly
D.light is请帮忙给出正确答案和分析,谢谢!
参考答案
正确答案:D
解析:比较级前面是实义动词travel,后面应该用does代替