![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
It was my first time visiting the United States. Before 1__________(leave) for Washington D.C.,I downloaded some introductions about some tourist 2__________(attract) in the city. Therefore I knew something about this city before the trip. A lot of things happened during my trip to Washington D.C. However, 3__________impressed me most is the International Spy Museum, which I visited on the4__________(three) day of the trip. In my spare time, I often watched movies about spies with my parents because l was 5__________(extreme)interested in spies. I acquired 6__________ good knowledge of that after I read the descriptions in the museum. I learned that spies usually hid important letters in an umbrella, in a shoe, or even in a pair of ordinary 7__________(glass).When they thought they were probably found out, they could have their appearances 8__________(change) in a few minutes. They put on fake hair, eyes or teeth. If they had an emergency, they even changed a smaller pair of shoes to change their walking styles in order not to 9__________(recognize). 10__________ conclusion, it was a nice trip. I had a good time in Washington D.C.. I will remember this trip forever.