children should ______ when cross the road a.carefully B.be careful 为啥?hurry up 明天用

分类: 作业答案 • 2022-08-10 16:31:00

问题描述：

children should ______ when cross the road a.carefully B.be careful 为啥?
hurry up 明天用

答

careful是形容词,形容词前用be动词.