—______ is our teacher?

—I think she’s in the classroom．

[　　]

A．Who　　　B．Where　　　C．How

— Who is Mr Xu ?

— He is ____ teacher and he teaches ____ P.E.

A. our; us         B. our; our             C. ours; our

—Who is ___ English teacher?
—Well, it's Mrs. Green. She teaches ____ English very well.

—Who is ________ English teacher?
— Well, it’s Mrs. Green. She teaches ________ English very well.