第1个回答 2010-08-04
These books are yours.
Are these books yours?
Yes.They are mine.
Those flower are so beautiful.
Are those flower beautiful?
Yes.
第2个回答 2010-08-04
These books are TOm's, those bags are mine.
Are these books Jack's ?
No.
Are those bags yours?
Yes.
第3个回答 2010-08-04
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