21The bank is __________ the post office

   A. between          B. next to       C. in

22.Did you enjoy __________ in the park yesterday?

   A. you              B. your        C. yourself

23.Have you __________ entered a composition?      

   A. ever             B. already        C. never

24.She ___________ to Shanghai on business.

  A. have been        B. has gone        C. has been