☆Whose glass is that?
☆Those are hers./They are hers.
☆Are those yours?/Are they yours?
☆Is that Junko's?/Is it Junko's?
Whose glasses are these?-They are hers.
Are these your glasses?-No they're not/No,they aren't
There is a link between how hard you study and the grade you receive.
/english/phrase/67818