21. A、athletic       B、more athletic       C、much athletic         D、very athletic

20. A、short           B、a little shorter        C、more short     D、smaller

19. A、the different     B、difference    C、different       D、more different

18. A、As             B、like                 C、but           D、though

17. A、twin sisters      B、twins sisters          C、twin sister    D、twins sister

16. A、is             B、are          C、has           D、have

15.       Friday evening, we're going to the movies with our teachers.

   Can you       us ?

  A、On, join          B、In，join              C、In, take part in            D、On, with

Thank you for your last letter. Here  16    photos of me and my  17   Lin Ying.  18   you can see, In some ways we look the same, and in some ways we look  19  . We both have black hair, though my hair is   20   than hers. We both like sports, although Liu Ying is    21    than me. She's more outgoing and I'm quieter than  22  . I think I'm smarter. My favorite  23    are physics and chemistry. We both enjoy  24  to parties.

Please visit   25  soon!

14.--I don't feel well, doctor.--        ?

  A、What's the matter                   B、How are you

  C、Are you better                      D、Do you feel like eating anything

13.--      do you go to school?

  --I usually go to school by bus, but      I walk there.

A、when, sometimes                         B、How, some times

  C、How, sometimes                          D、How often, sometime

12.I don't know when the train will             .

  A、arrive       B、arrive at       C、get to                  D、arrives