If we _____careful ,fire can be very dangerousA.don't be B.are C.aren't D.won't be请说明一下理由

分类: 作业答案 • 2021-12-20 03:14:19

问题描述：

If we _____careful ,fire can be very dangerous
A.don't be B.are C.aren't D.won't be
请说明一下理由

答