you'd better 完整的形式是had better, had 在这边是助动词,所以后面的反义疑问句,应该用助动词的否定形式hadn't
所以填写hadn't
希望能帮到你,有问题沟通好了我也想是hadn't但你看上面和下面的人是怎么回事？答案千奇百怪you'd better = you had better从语法结构上应该是填hadn'tIf you cool water,it turns into ice.对划线部分提问it turns into ice划线 _____ _____If you cool water帮我看下这个谢谢嗯，就楼上说的，what happens,很好的谢谢，也谢谢楼上的，他等级低点