用those和these造句,并改成疑问句,并回答

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These books are TOm's, those bags are mine.
Are these books Jack's ?
No.
Are those bags yours?
Yes.

These books are yours.
Are these books yours?
Yes.They are mine.
Those flower are so beautiful.
Are those flower beautiful?
Yes.

those boys are my classmates
are those boys your classmates?
yes, those are my clssmates
these aren't mine
are these yours?
no,these aren't

These are students.Those are teachers.
Are these students?Yes,these are./No,these aren't.
Are those teachers?Yes,those are./No,those aren't.