按要求完成下列各题。
1.It’s four o’clock. (对画线部分提问)
_________ _________ is it?
2.I have a green skirt. (改为一般疑问句)
_________ _________ have a green skirt?
3.They are my pants. (改为否定句)
They _________ my _________.
4.Those are pants. (改为一般疑问句)
_________ _________ pants?
5.Are these your pens? (作否定回答)
_________, they _________.