That is black cat 改成(what) His bag is red 提问 This is a small hall (一般疑问句 否定回答

问题描述:

That is black cat 改成(what) His bag is red 提问 This is a small hall (一般疑问句 否定回答

What is that?
What colour is his bag?
Is this a small hall?
No,it isn't.