She is OK.改为一般疑问句

问题描述:

She is OK.改为一般疑问句
This is a ruler.改为一般疑问句
This is an apple.对划线部分进行提问 画线:an apple
It is an orange.(改为否定句)

Is he OK?
Is this a ruler?
What's this?
It isn't an orange.