They couldn't arrive because they were delayed by?A.heavy traffic B.heavy trafficsC.crowded trafffic.D.crowded traffics.选什么?为什么?根据语法规则是什么?

分类: 作业答案 • 2022-02-17 22:08:35

问题描述：

They couldn't arrive because they were delayed by?
A.heavy traffic B.heavy traffics
C.crowded trafffic.D.crowded traffics.
选什么?为什么?根据语法规则是什么?

答

选A.
首先traffic是不可数名词.
其次一般的搭配是用heavy；指人就用heavy.