阅读下面的短文，然后根据汉语或英语首字母提示写出所缺英语单词的正确形式。

     I had a very unusual experience on (1)_____ 星期天. At around ten o'clock in the morning, I was walking

down the street when a UFO landed in (2)f_____ of me. You can imagine how (6)_____ 奇怪的 it was! An

alien got out and walked down the Center Street. I (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

(5)p_____.