(   )37. My teacher warned us ________ in the streets.

        A. not to play       B. don’t play      C. to not play  D. to not play

(   )38. Not only Jim but also his parents _____a few interesting places since they came to China.

       A. will visit   B. has visit   C. have visited   D. visited

(   )39. - Excuse me, could you tell me¡¡¡¡¡¡¡¡?

         - Sure. There’s a post office at the first crossing.

       A. where ’s a post office                  B. where I can buy some stamps

C. is there a post office near here       D. how far is a post office