请选择BA'}0B)m,L5p'u We often go to the ________ _________to send a postcard.9W;i4u,u,E*{:b)}3J+J'S2S'r4X
A post office9W;i4u,u,E*{:b)}3J+J'S2S'r4X
B bus stop9W;i4u,u,E*{:b)}3J+J'S2S'r4X