用ThisThatTheseThose来造句,要造出陈述句,再转变成一般疑问句并给出是和否两种回答,总共句回答后我确认后

This:This is a pen.
Is this a pen?
Yes,this is.
No,this isn't.
This isn't a pen.
That:That is a pen.
Is that a pen?
Yes,that is.
No,that isn't.
That isn't a pen.
These:These are pens.
Are these pens?
Yes,these are.
No,these aren't.
These aren't pens.
Those:Those are pens.
Are those pens?
Yes,those are.
No,those aren't.
Those aren't pens.