were there.there were_____ no air,there would be no sound.a.were there b.there were c,is there d.there is分析；答案是a我就是不知道a,和b有什么区别,为什么一个必须在前,一个必须在后.

分类: 作业答案 • 2021-12-20 02:27:45

问题描述：

were there.there were
_____ no air,there would be no sound.
a.were there b.there were c,is there d.there is
分析；答案是a
我就是不知道a,和b有什么区别,为什么一个必须在前,一个必须在后.

答

如果没有空气,世界将没声音
句中省略了If,所以there be变为be there