四、阅读短文，在空白处填入适当的单词或括号内单词的正确形式
Do you want to have an adventure (冒险) with no big dangers (危险)? Try letterboxing. It's really 32 (excite).
Letterboxing ______ 33 ______ (begin) in England in 1854. It is like hiking and exploring with a special adventure. Someone makes a letterbox—a small box ______ 34 ______ a little notebook in it. The person hides the letterbox in a park, a forest, a city, or other ______ 35 ______ (place). Next, the person writes the direction (方向) to the box ______ 36 ______ puts the direction on the internet. Then letterboxers use ______ 37 ______ (they) to look for the letterbox.
Letterboxing might not be as popular as skydiving or rock climbing, but it's a great activity. It's 38 interesting outdoor adventure. And it's very cool 39 (open) a letterbox and know that no one else has found it! There 40 (be) now many different kinds of letterboxes and people can have great fun 41 (enjoy) these activities. If you've never gone letterboxing before, you can give it a try.
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