When I was nine years old, I used to go to the post office with my mother, sending greeting cards to my aunt in Singapore.To me, these trips were really _1_ memories.And receiving mail through a mailbox outside our gate was just as exciting.My small hands could _2_ get the mail without using a key! I always couldn’t wait to see how much I was _3_ .Oh, a letter! From Singapore! I would run back home and show it to my _4_ .When there was a letter for me, I wouldn’t run—I would open it right there.
　　After my family moved back to Singapore, I _5_ going to the post office.Years later, my company sent me to Shanghai, and the post office found me again.Two years ago I celebrated my _6_ with five friends on top of the mountain in Longsheng, China.At sunrise we _7_ up to a beautiful view from the mountain top.Later in the afternoon, as we were going _8_ the mountain and returning from the sunrise viewing place, a _9_ shop caught our attention.It only sold noodles, coffee and had a China _10_ sign.
　　We asked the owner if she could really send mail.She happily said yes.It seemed hard to believe, _11_ we were at the highest top of the mountain.I picked one postcard out and asked my friends to write _12_ a birthday note.We bought a stamp, wrote some notes and gave the shop owner the postcard.
　　Three weeks later, I arrived home and _13_ my mailbox: Hello, postcard! I broke into a big smile.
　　That birthday postcard attracted me again to the post office and all its delights.I had _14_ the post office all these years.Today I _15_ send postcards to friends.And every time I am at the post office buying stamps, I cannot help but smile—how one postcard will make its way across the world and brighten up someone’s day.