I had a very unusual experience on【小题1】星期天。At around ten o'clock in the morning, I was walking down the street when a UFO landed in 【小题2】f_____ of me. You can imagine how【小题3】奇怪的it was! An alien got out and walked down the Center Street. I 【小题4】跟随it to see where it was going, and I was very surprised when it went into a souvenir shop. While it was looking at the souvenirs, the assistant called the 【小题5】p_______. 