问题描述：
They are playing football一般疑问句
还有：
I think it is cat。改为否定句
The cat is on the box 对On the box 提问
Is she going to school today？做否定回答
还有：
I think it is cat。改为否定句
The cat is on the box 对On the box 提问
Is she going to school today？做否定回答
问题解答：
我来补答展开全文阅读